Abstract: The present application discloses a method for delineating exploration reserved areas of deep-sea polymetallic sulfide resources, which is suitable for delineating the exploration reserved area for further exploration by delineation and evaluation of the prospect area after prospecting and investigation of seabed sulfide. The method comprises the following: a stage of extracting prospecting indicators; a stage of evaluating metallogenic prospect areas; and, a stage of delineation of the exploration reserved areas. The present application can be applied to the evaluation and prediction of deep-sea polymetallic sulfide resources, in particular to the delineation of exploration reserved areas for deep-sea polymetallic sulfide resources.

Abstract: A method for reducing inline directivity of an air-gun source signature by optimizing spatial distribution of air-guns is provided according to the present application, which relates to a field of design and optimization of an air-gun source. An evaluation standard in the air-gun distribution in an air-gun array direction is proposed. By a combination optimization along both the inline and depth directions, a design scheme having evidently broader effective bandwidth and effective take-off angle width than a design scheme of a conventional source is obtained, with which the directivity of the air-gun source signature can be reduced.