Abstract: A seismic data acquisition positioning apparatus is provided. The apparatus can include a seismic data acquisition unit. The unit can include a case having an internal compartment. The unit can include a power source, a clock, a seismic data recorder, a control unit, and at least one sensor disposed within the case. The apparatus can include a hanging unit including a beacon unit. The apparatus can include a connector having a first end coupled with the seismic data acquisition unit and having a second end coupled with the hanging unit. The connector can pivot about the first end of the connector.

Abstract: The present disclosure provides a multi-layer open channel portable flow measuring device based on a water impulse principle and a flow measuring method; an instantaneous water head height of a water-carrying section, namely, a water level H is measured through a pressure sensor at a bottom of a U-shaped hollow tube; at the same time, layered multi-point velocity measuring components in equidistant layout include a series of position “current meters” composed of tension sensors, hollow punching lightweight steel balls and lightweight elastic steel ropes to measure velocities V1-n of different points, n depends on the layer decided to be arranged according to a channel depth, an instantaneous flow value of the whole water-carrying section is further acquired through multi-layer flow accumulation, and with a simple structure, intelligent control, easy operation and convenient carrying, the present disclosure may further improve the flow measuring precision.

Abstract: A long-term in-situ observation device for the deep sea bottom supported engineering geological environment is provided, including: a sediment acoustic probe, a sediment pore water pressure probe, a three-dimensional resistivity probe, a water observation instrument, a long-term observation power supply system, a probe hydraulic penetration system, a general control and data storage transmission system, an acoustic releaser, an underwater acoustic communication apparatus, and an instrument platform. The observations include the engineering properties, physical properties, mechanical properties, and biochemical properties of a seawater-seabed interface-sediment. The engineering properties and the physical and mechanical indexes of seafloor sediments are comprehensively determined by three-dimensional measurement of seafloor resistivity and acoustic wave measurements. The physical and biochemical properties of seawater are expected to be acquired by sensors.

Abstract: Image recording as long as possible during one activity is required in deep sea exploration. Necessity of multi-directional image recording, optical and chemical observations and probing of mineral resources of seabed are also increased. There is no underwater exploration device enable these requirements. It is disclosed that at least one battery-driven underwater exploration body having three pressure-resistant hollow glass spheres for housing an image capturing device, an illumination device, a recording device, an acoustic communication device and a control device controlling thereof and at least one battery body having an approximately the same shape and structure as the underwater exploration body are connected with each other by a connecting tool to provide the connectedly-formed underwater exploration device.

Abstract: A line intended to be submerged in an aquatic environment. The line includes a mooring configured to be placed on the bottom of the aquatic environment and for immobilizing the line relative to the bottom, a buoy configured to float on the surface of the aquatic environment, an object extending along a vertical axis, having a center of balance of hydrodynamic forces when the object is subjected to a horizontal water current and called the hydrodynamic center, and having a center of gravity vertically remote from the hydrodynamic center, a frame connected to the object by a pivoting link with a substantially horizontal axis passing through the hydrodynamic center, at least one fin extending vertically, whereby the object can be oriented relative to a horizontal water current, a first section of line connecting the mooring to the frame, a second section of line connecting the frame to the buoy.

Abstract: According to one embodiment, a physical quantity measuring apparatus includes a signal measurer configured to include sensors configured to measure component values of two axes from among component values of three axes including an X(Hx), a Y(Hy) and a Z(Hz) measured component value of a physical quantity to be measured, a sensor controller configured to select one from among the sensors to be controlled to output a measured value from the selected sensor, an A/D transformer configured to transform an outputted signal selected by the sensor control unit into a digital signal, and a signal processor configured to receive the digital signal from the A/D transformer and to combine the received digital signal with other received digital signals to calculate X, Y and Z component values of the physical quantity.

Abstract: Various methods and apparatuses for facilitating cleaning of submerged geophysical equipment using sound waves transmitted at ultrasonic frequencies are disclosed. In some embodiments, one or more transducers may be configured to transmit sound at one or more ultrasonic frequencies. The sound at ultrasonic frequencies may be transmitted in the vicinity of submerged geophysical equipment, such as a sensor streamer towed behind a survey vessel. Obstructions (e.g., barnacle larvae) adhering to surfaces of the geophysical equipment may be loosened or removed altogether when ultrasonic transmissions occur within its vicinity. The transducers used to transmit the ultrasonic frequencies may be implemented in various ways, such as being attached to a remote operated vehicle, a cleaning unit, or as being an integral component of the geophysical equipment.

Abstract: Sampling systems provide apparatuses for obtaining and assessing the composition of a fluid, typically air. Sampling systems allow industrial hygienists to assess the risks and determine the protective equipment that should be worn by personnel entering a specific environment. In one embodiment, a sampling system comprises a sampling container that draws air into its inner volume and the sampling periods are controlled by an automatic timer valve. The automatic timer valve may comprise a rotating disk or plate that provides fluid communication from the area to be sampled to the inner volume of the sample bag when apertures are aligned with inlet tube.

Abstract: System and method for maintaining the observed vertical structure of ocean temperature and salinity in data assimilation systems that otherwise would produce overly smoothed ocean vertical structure. The present embodiment uses a multi-layer least squares minimization technique in which the ocean is split into layers with fundamentally different vertical gradients, and the dynamic ocean layers are constrained by the observed vertical gradients of the layer itself.

Abstract: A method includes: a guide cable and an observation platform is provided, a profiler is mounted, and a trigger gear is set at the bottom of the guide cable; a weight drop-off gear is set at the top of the guide cable, when the observation platform is located at the top of the guide cable, one weight is released by the weight drop-off gear onto the observation platform so that the observation platform descends along the guide cable owing to additional gravity, and when the observation platform descends to the given position of the trigger gear at the bottom of the guide cable, the release gear releases the weight on the observation platform so that the observation platform returns by its own buoyancy to the top along the guide cable; another weight is subsequently released by the weight drop-off gear so that the observation platform repeats the foregoing reciprocating motion.

Abstract: Techniques for improving overhead image bathymetry include obtaining depth information from image data based on one or more of the spectral domain, the angular domain (e.g., stereo or photogrammetry), the temporal domain (e.g., monitoring the movement of waves in a body of water), or any other suitable domain, together with a priori information about the area of interest. These different pieces of depth information from the various different domains are combined together using any combination of Optimal Estimation and Continuity Constraints to improve the accuracy of the results.

Abstract: An electromagnetic flow meter and method for monitoring the flow of a fluid is provided. In particular, the electromagnetic flow meter and method measure the axial velocity profile of a conducting fluid. The conducting fluid may be a conducting single phase fluid or a conducting continuous phase of a multiphase fluid. The conducting fluid may have a uniform flow profile or a non-uniform flow profile. The electromagnetic flow meter and method measure the axial velocity profile of a conducting fluid by dividing the flow cross section into multiple pixels and determining the axial velocity of the conducting fluid in each pixel. Having derived the axial velocity profile, the electromagnetic flow meter and method may further derive the volumetric flow rate of the conducting fluid. The electromagnetic flow meter and method may be suitable for measuring the axial velocity profile and optionally the volumetric flow rates of each phase of a multiphase fluid.

Abstract: A method of operating a closed photobioreactor for cultivation of phototrophic microorganisms. The photobioreactor comprises a culture liquid and is partially or completely surrounded by water of a water body. A density difference between the culture liquid and the surrounding water is provided so that the position of the photobioreactor in the water body is controlled. A closed photobioreactor for cultivation of phototrophic microorganisms. The photobioreactor is adapted to comprise a culture liquid and to be partially or completely surrounded by water of a water body. The photobioreactor comprises means for determining the density difference between the culture liquid and the surrounding water.

Abstract: A co-planar differential pressure sensor module is provided. The module includes a base having a pair of recesses. A pair of pedestals is also provided where each pedestal is disposed in a respective recess and is coupled to a respective isolation diaphragm. A differential pressure sensor has a sensing diaphragm and a pair of pressure sensing ports. Each port of the differential pressure sensor is fluidically coupled to a respective isolation diaphragm by a fill fluid. The module also includes circuitry coupled to the differential pressure sensor to measure an electrical characteristic of the sensor that varies with differential pressure. The base is constructed from a material that is suitable for submersion in seawater. A method of constructing a co-planar differential pressure sensor module is also provided. In another embodiment, a pressure sensor module is provided. The pressure sensor module includes a base having a recess. A pedestal is disposed in the recess and is coupled to an isolation diaphragm.

Abstract: Autonomous Underwater Vehicles (AUV) collect and transmit information about ice floe thickness; this is combined with SYNTHETIC APERTURE RADAR images from satellites to identify and track dangerously thick regions of ice. The overlayed data is presented graphically to allow tracking of the thick ice regions over time. This information is used to alert drilling platforms in icy ocean conditions of pending ice floe dangers.

Abstract: Method for determining the thickness of an upper layer of a fluid mass comprising at least this upper layer and a lower layer lying thereunder, such as a waterway with a navigable upper layer and a viscous mud layer located thereunder, wherein the viscosity of the fluid of the lower layer is greater than the viscosity of the fluid of the upper layer, wherein a body freely movable in the fluid mass is moved through the fluid mass at a velocity such that the body enters a state of equilibrium substantially at the interface between the lower and upper layer; the depth position of the body is determined at successive points in order to know the thickness of the upper layer at these points; and the resistivity of the fluid in the vicinity of the body is measured at successive points.

Abstract: An automatic hydrologic parameter measuring system for a river flow comprises a supporting installed below a bridge surface; a waterproof box connected to a steel rope for suspending a weight; another end of the rope extending downwards out of the waterproof box for retaining the weight; a waterproof electric wire winding around the steel rope for transferring signals to the signal processor; a water pressure meter installed in a hollow space of the weight; when the weight being in water, the water pressure meter starts the measuring process; after the weight reaches to the riverbed, the water pressure is unchangeable; and a water pressure meter installed in a hollow space of the weight; when the weight being in water, the water pressure meter starts the measuring process; after the weight reaches to the riverbed, the water pressure is unchangeable.

Abstract: A microprocessor preprogrammable autonomous device with biofouling control and method for monitoring aquatic environment by disposing environmental sensors in a sensor chamber which programmably opens for allowing direct communication between the sensors and the fluid of interest for sampling and which is closed after the sampling sequence is completed to create an anti-fouling environment in the sensor chamber by dissolving a biocide salt in the chamber and exposing the sensors to the anti-fouling environment for a predetermined period of time.

Abstract: A disclosed pressure-responsive sensor includes a flexible element contained within an enclosure and a membrane configured to exert an electrostatic force on the flexible element to cause the flexible element to respond to pressure variations on the membrane. A disclosed pressure-sensing method includes electrostatically coupling a membrane to a flexible element contained within an enclosure to transfer a pressure response of the membrane to the flexible element. Motion of the flexible element is converted into a pressure signal.

Abstract: A system for monitoring subsidence and/or rising of a waterbottom has string of pressure sensors along the interior of a sealed -protective tube(q?) that rests on the waterbottom and is filled with a low pressure liquid, so that any subsidence and/or rising of the can be deduced from subsidence and/or rising of a section of the tube and associated pressure variations measured by the sensors due to variation of the hydrostatic fluid pressure of the liquid in the of the tube. The tube interior is divided into segments by valves during descent to protect the sensors against hydrostatic pressure of the liquid within the tube during installation. The use of a low pressure liquid in the tube allows the use of sensitive pressure sensors which are able to monitor pressure variations of ?0.001 Bar associated with a waterbottom subsidence of ?1 cm, at a water depth of >km where the ambient water pressure may be >100 Bar.

Abstract: An automatic hydrologic parameter measuring system for a river flow comprises a supporting installed below a bridge surface; a waterproof box connected to a steel rope for suspending a weight; another end of the rope extending downwards out of the waterproof box for retaining the weight; a waterproof electric wire winding around the steel rope for transferring signals to the signal processor; a water pressure meter installed in a hollow space of the weight; when the weight being in water, the water pressure meter starts the measuring process; after the weight reaches to the riverbed, the water pressure is unchangeable; and a water pressure meter installed in a hollow space of the weight; when the weight being in water, the water pressure meter starts the measuring process; after the weight reaches to the riverbed, the water pressure is unchangeable.

Abstract: A float device includes a drive motor provided inside a float hull, a plunger reciprocating along with rotation of the drive motor, an internal oil reservoir for housing an hydraulic oil therein, an externally-opened cylinder attached to the float hull, a buoyant force adjustment piston reciprocating in the cylinder along with exit/entry of the hydraulic oil, and a three-way valve having a first connection port connected to the plunger, a second connection port connected to the internal oil reservoir, and a third connection per connected to the cylinder, for switching the flow between the first connection port and the second connection ports and the flow between the first connection port and the third connection port.

Abstract: Disclosed are methods and systems for controlling depth profiles of marine geophysical sensor streamers as they are towed in a body of water. An embodiment discloses a method for marine geophysical surveying, the method comprising: towing a geophysical sensor streamer in a body of water having a surface and a floor, the geophysical sensor streamer being coupled to a survey vessel by a lead-in cable, the lead-in cable having a length that extends from the survey vessel; adjusting the length of the lead-in cable to cause a forward end of the geophysical sensor streamer to follow a depth profile; and deflecting the geophysical sensor streamer in the vertical plane at one or more spaced apart locations.

Abstract: Disclosed herein is a device for tracking the position of a freshwater-saltwater interface of underground water in the coastal area. The device includes a buoyancy adjustment unit which comprises a pipe that has an internal space and is closed on a lower end thereof, a sealing cap which is removably coupled to an upper end of the buoyancy adjustment unit, a variable metal member which is attached to the sealing cap, a cordless measurement sensor which is provided under the lower end of the buoyancy adjustment unit, and a perforated pipe which is coupled to the lower end of the buoyancy adjustment unit and covers the cordless measurement sensor. Distilled water is supplied into the buoyancy adjustment unit, and a buoyancy of the buoyancy adjustment unit is adjusted depending on the amount of distilled water.

Abstract: A pressure compensator is configured to compensate for volume variations of an insulation medium of a subsea installation. The pressure compensator includes a first bellows chamber having walls and a first bellows part. The first bellows chamber is in flow connection with an insulation medium chamber of the subsea installation, and the walls of the first bellows chamber are configured to separate the insulating medium from surroundings. The first bellows chamber is surrounded by a second bellows chamber having walls and a second bellows part. The second bellows chamber is configured to form a closed intermediate space around the first bellows chamber. The walls of the second bellows chamber are configured to separate at least the bellows parts of the first bellows chamber from the surrounding sea water. The second bellows chamber is further filled with an intermediate medium.

Abstract: A pressure-receiving cylinder (11) is in a columnar shape extending in the direction of a center axis (O), and having an orthogonal cross section to the center axis (O) that defines a rotationally symmetrical contour. In a piezoelectric ceramic structure (12), piezoelectric ceramic modules are arranged in a rotationally symmetrical manner around the center axis (O), each piezoelectric ceramic module including a pair of piezoelectric ceramic and electrodes connected thereto in the polarization direction. Containers (8, 10) are connected to respective ends of the piezoelectric ceramic module (15) in the polarization direction, and apply a stress corresponding to an external force received by the pressure-receiving cylinder (11) to the pressure-receiving cylinder (11) and the piezoelectric ceramic structure (12). Respective voltages output by the plurality of piezoelectric ceramic modules are added together.

Abstract: A device for disposing an antenna dipole arranged to be submerged in a water mass is described. A first electrode is placed, in an operative position, approximately vertically above and at a distance from a second electrode. A mast is pivotally secured, at a portion distant from, in the operative position, a lower end portion, to a stand. The first electrode is arranged near, in or on an upper end portion of the mast. The second electrode is arranged near, in or on the lower end portion of the mast. The mast and/or stand includes means which are arranged to keep the mast in a prescribed position. The mast and stand are formed substantially of non-magnetic materials.

Abstract: According to one aspect, the invention relates to an aquatic sample analysis system adapted for in situ use. The system includes an incubation chamber having an optically clear portion and forming an opening for receiving a fluidic sample and apparatus for sealing the opening. The system also includes a sensor for sensing at least one parameter associated with the sample inside the chamber, a control module in communication with the sensor, and a power source.

Abstract: A method, apparatus, system, article of manufacture, and computer readable storage medium provide the ability to measure wind. Data at a first resolution (i.e., low resolution data) is collected by a satellite scatterometer. Thin slices of the data are determined. A collocation of the data slices are determined at each grid cell center to obtain ensembles of collocated data slices. Each ensemble of collocated data slices is decomposed into a mean part and a fluctuating part. The data is reconstructed at a second resolution from the mean part and a residue of the fluctuating part. A wind measurement is determined from the data at the second resolution using a wind model function. A description of the wind measurement is output.

Abstract: Disclosed embodiments include an apparatus for water sampling and analysis, the apparatus comprising: (a) a device for water sampling at a plurality of depths comprising a hosepipe and a plurality of internal independent pipes with a plurality of sampling inlets at a plurality of water depths, and (b) a pumping system to pump a sample of water collected using the device for water sampling at a plurality of depths to an isolated module for analysis. According to one embodiment, the apparatus is an autonomous multi-parametric buoy with capabilities for multi-depth water sampling, self-maintenance, monitoring, data collection, transmission, and analysis.

Abstract: Method for laser hydrography in which at least one laser beam is emitted from a known location and in a known direction onto the surface of a body of water and through the water onto the bottom of the body of water and measurement points of the water surface and the water bottom in a coordinate system are determined from transit-time measurements of the reflections of the laser beam at the water surface and water bottom, wherein the local inclination of the water surface at an entry point of the laser beam into the body of water is determined from at least three measurement points of the water surface, wherein a local entry angle of the laser beam into the body of water is determined from the local inclination and the known direction of the laser beam, and wherein the measurement point of the water bottom is created as a function of the laser beam direction, the local inclination, and the optical refraction due to the corresponding local entry angle of the laser beam.

Abstract: An underwater sensor device comprises a submersible housing including one or more housing components, one or more sensors for monitoring and collecting water characteristics, a controller for controlling operations of the one or more sensors and an graphical user interface mounted to the housing that displays the water environmental data. The housing defines a channel that extends through one of the housing components, and at least one of the sensors is mounted to the housing and extends into the channel. The controller is disposed within the housing and is operatively connected to the one or more sensors.

Abstract: The present invention relates to an instrument for marking and environmental monitoring in regatta courses having an inflatable float and a modular mast which is collapsible, The mast and float are transportable in compact package of reduced size. When deployed, the instrument is designed to simultaneously define the area of conducting the nautical trials, and transmit the conditions of the area in both meteorological and oceanographic terms. The system comprises an inflatable pneumatic float and a mast which serves to house the meteorological and oceanographic instrumentation, as well as a group of elements for communication, electromechanical components, and an anchorage system.

Abstract: The method of measuring the current below an offshore vessel by suspending a flexible member in the currents from the vessel, adding reflectors or signal generators to the flexible member, adding an adjustable weight to the bottom of the flexible member, determining the horizontal position of each reflector in comparison to the reflector above and below it, and using this information to determine the ocean currents at various levels below the vessel.

Abstract: Method for determining the thickness of an upper layer of a fluid mass comprising at least this upper layer and a lower layer lying thereunder, such as a waterway with a navigable upper layer and a viscous mud layer located thereunder, wherein the viscosity of the fluid of the lower layer is greater than the viscosity of the fluid of the upper layer, wherein a body freely movable in the fluid mass is moved through the fluid mass at a velocity such that the body enters a state of equilibrium substantially at the interface between the lower and upper layer; the depth position of the body is determined at successive points in order to know the thickness of the upper layer at these points; and the resistivity of the fluid in the vicinity of the body is measured at successive points.

Abstract: A fluid measuring instrument carrier structure includes a carrier main body assembled from three axially connected steel pipes. The carrier main body is provided from front to back at predetermined positions with a current meter, a front current-guiding holding-down plate, and a rear current-guiding holding-down plate. The front current-guiding holding-down plate has a gravity-center adjuster connected thereto. By employing the principles of fluid mechanics, the carrier main body with the front and rear current-guiding holding-down plates and the gravity-center adjuster is able to submerge in water and slightly horizontally sway leftward and rightward in water currents to maintain at a stable and balanced state, allowing a user to easily and quickly measure river water depth and current velocity.

Abstract: A device for disposing an antenna dipole arranged to be submerged in a water mass is described. A first electrode is placed, in an operative position, approximately vertically above and at a distance from a second electrode. A mast is pivotally secured, at a portion distant from, in the operative position, a lower end portion, to a stand. The first electrode is arranged near, in or on an upper end portion of the mast. The second electrode is arranged near, in or on the lower end portion of the mast. The mast and/or stand includes means which are arranged to keep the mast in a prescribed position. The mast and stand are formed substantially of non-magnetic materials.

Abstract: Method for laser hydrography in which at least one laser beam is transmitted emitted from a known location and at in a known direction onto the surface of a body of water and through this the water onto the bottom of the body of water and measurement points of the water surface and the water bottom in a coordinate system are determined from transit-time measurements of the reflections of the laser beam at the water surface and water bottom, wherein the local inclination of the water surface at an entry point of the laser beam into the body of water is determined from at least three measurement points of the water surface, wherein a local entry angle of the laser beam into the body of water is determined from the local inclination and the known direction of the laser beam, and wherein the measurement point of the water bottom is created as a function of the laser beam direction, the local inclination, and the optical refraction due to the corresponding local entry angle of the laser beam.

Abstract: A real-time in-situ sensor system is provided for measurement of bioluminescence and determination of bioluminescence surface signature. The system measures bioluminescence in the wake of a submerged moving object as well as ambient light levels outside of the wake. Along with measurements of depth and water-quality parameters including turbidity, temperature and salinity, the surface signature of the induced underwater bioluminescence can be calculated by considering light transmission and attenuation through water. With this real-time information, the operator of the submerged moving object can employ tactical maneuvers to affect the resultant surface signature.

Abstract: A pressure-receiving cylinder (11) is in a columnar shape extending in the direction of a center axis (O), and having an orthogonal cross section to the center axis (O) that defines a rotationally symmetrical contour. In a piezoelectric ceramic structure (12), piezoelectric ceramic modules are arranged in a rotationally symmetrical manner around the center axis (O), each piezoelectric ceramic module including a pair of piezoelectric ceramic and electrodes connected thereto in the polarization direction. Containers (8, 10) are connected to respective ends of the piezoelectric ceramic module (15) in the polarization direction, and apply a stress corresponding to an external force received by the pressure-receiving cylinder (11) to the pressure-receiving cylinder (11) and the piezoelectric ceramic structure (12). Respective voltages output by the plurality of piezoelectric ceramic modules are added together.

Abstract: An underwater sensor device comprises a submersible housing including one or more housing components, one or more sensors for monitoring and collecting water characteristics, a controller for controlling operations of the one or more sensors and an graphical user interface mounted to the housing that displays the water environmental data. The housing defines a channel that extends through one of the housing components, and at least one of the sensors is mounted to the housing and extends into the channel. The controller is disposed within the housing and is operatively connected to the one or more sensors.

Abstract: A method and a device are described for survey of an ocean floor, and also cables and the like on the ocean floor in ocean areas with strong currents, as a submersible survey platform (10) is lowered from a surface vessel with the help of a winch system (12) on the vessel to a desired distance in relation to the ocean floor. The desired fixed distance from the ocean floor is controlled in real time in relation to the topography of the ocean floor at the same time as the vessel moves forward to drive the platform (10) along a desired trajectory with the help of one or more sensors that register the distance to and possibly direction towards the ocean floor and which are connected to the winch (12) via a control system (14). At the same time, sideways movements of the platform (10) caused by currents are compensated for with the help of one or more sensors that are connected to a number of thrusters (16) on the platform (10) via said control system (12).

Abstract: A submersible water monitoring probe assembly including: a cam-twist type interconnect mechanism; flexible PCBA (printed circuit board assembly) having flexible ribbon cable sandwiched between layers of an elongated circuit board, the ribbon cable extending outwardly from each end of the board and along an elongated probe-body; internal gas-permeable and generally liquid impermeable barrier assembly disposed within the cam-twist inter-connect mechanism between the elongated PCBA housed within the probe-body and an electrical connector of the cam-twist interconnect mechanism; and if used, a vented cable assembly, or other means of transmitting sensor data collected by sensing circuitry within a submersed probe-end. Also, an extender assembly for use with the submersible probe. At each end portion of the extender assembly is either a male cam-twist type interconnect piece or a female cam-twist type interconnect piece. The length-extender assembly may be electrically adapted to house one or more battery cells.

Abstract: Human observers stationed on or near beaches gather subjective observations of one or more observable beach conditions associated with respiratory distress. Subjectively determined observations such as dead fish and audible coughing provide a better indication of the likelihood of respiratory distress than measurements made using scientific instruments. The observations may be sent to a remote central database using handheld communication devices. A beach status evaluation is determined based on stored observations, and may be provided to beachgoers through Internet web pages or by telephone or text-message to enable beachgoers to choose an alternative beach or alternative activity when respiratory distress is likely.

Abstract: A method of collecting weather data includes determining probable occurrences of weather events. Contact information corresponding to a plurality of users is maintained. Weather collection devices are sent to the plurality of users prior to the occurrence of the probable weather event. Data is collected by the weather collection devices upon the actual occurrence of the probable weather event.

Abstract: The present invention relates to an autonomous underwater vehicle (“AUV”) for monitoring underwater fluid currents by detecting electrical currents induced by the flow of a conductive liquid through the Earth's magnetic field. More particularly, the present invention relates to the gathering of data related to underwater fluid currents and the control of AUV motion during data gathering.

Abstract: Autonomous biobuoy for detecting a characteristic of a marine biosphere and method of assembling the biobuoy. An autonomous biobuoy is provided for detecting a characteristic of a marine biosphere, comprising a detector assembly for detecting the characteristic of the marine biosphere, the detector assembly capable of generating a detector assembly output signal responsive to the characteristic detected thereby and a transmitter coupled to said detector assembly for broadcasting the detector assembly output signal.

Abstract: An Interactive Mobile Aquatic Probing and Surveillance system. The system includes a remote aquatic or amphibious agent which is controlled by a typically land-based computer host. The agent is a field robot in the form of a comparatively small and inexpensive, untethered, self-propelled, aquatic or amphibious, non-submersible vehicle that preferably carries physical and water characteristic sensors, as well as other operational equipment for use on relatively small bodies of water and wetlands. The host interacts with a human operator and provides control commands to and receives data from the agent in real time via a wireless communication between the agent and the host. The control commands include guidance commands including navigational and propulsion commands as well as commands for operating the sensors and various other equipment carried by the agent.

Abstract: Portable profiler for profiling a marine biosphere and method of assembling the profiler. A portable profiler is provided for profiling a marine biosphere, comprising a housing; a ballast coupled to the housing for controlling movement of the housing in the biosphere; a light-sensitive detector assembly coupled to the housing for detecting bioluminescence, the detector assembly capable of generating an output signal in response to the bioluminescence detected thereby; and a data analysis and storage device coupled to the light-sensitive detector assembly for receiving the output signal.

Abstract: A method for measuring channel flow discharge comprising the steps of: locating a platform carrying a fluid flow measurement device at a plurality of stations at spaced locations across a channel; determining the velocity of the platform at each station by averaging the differences between the position of the platform at a first time (t) and the position of the platform at a second time equal to the first time plus a position averaging interval (PI) for a plurality of different first times; obtaining current flow vs. depth profiles at each station by adjusting current velocity as measured by the current flow measuring device for the platform velocity; determining the flow discharge at each station.