5 results about "Ocean bottom seismograph" patented technology

The application discloses a method and device for extracting Scholte wave attenuation coefficients, a system and a storage medium, and comprises the following steps: collecting seabed seismic data of an observation area; obtaining a pretreated common-receiver gather based on the seabed seismic data of the observation area; based on the CRG gather data in the SU format pretreated by the seabed seismograph, using high-resolution forward and inverse transformation, separating and extracting the base-order CRG gather with energy focusing and single order from the CRG gather coupled and stacked by multiple-order Scholte waves; based on the base-order CRG seismic gather, calculating the attenuation coefficients of any two gathers, and after the cyclic calculation of all gather pairs is completed, the average attenuation coefficient model corresponding to the gather pair is obtained. By using the technical scheme of the application, the Scholte wave dispersion order can be accurately separated, and the base-order attenuation coefficient can be specially extracted.

The application discloses a shallow sea heavy mineral sand mine resource exploration method and related equipment, and the method comprises the following steps: obtaining pre-research data of a target shallow sea area, predicting an exploration scheme based on the pre-research data, and arranging a bottom seismograph in the target shallow sea area based on the exploration scheme; collecting passive source micro-motion data by using the bottom seismograph, and extracting original data from the passive source micro-motion data based on a preset data quality standard; constructing a horizontal and vertical spectral ratio curve based on the original data, performing frequency spectrum separation on the horizontal and vertical spectral ratio curve, and obtaining a low-frequency curve of a bedrock resonance peak; constructing a palaeotopographic map through bedrock surface depth inversion based on the low-frequency curve; obtaining a regional geological model of the target shallow sea area, superimposing and analyzing the palaeotopographic map and the regional geological model, and obtaining an evaluation result of heavy sand mine resource potential. The application can effectively improve the exploration directivity and the accuracy of resource potential evaluation by identifying the change of ore-controlling landforms, and can be widely applied to the technical field of data processing.

This application discloses a seabed seismograph, which includes a detection unit and a connection unit. The detection unit includes a main unit and several sub-units. Each sub-unit is arranged around the main unit and surrounds the main unit. The sub-units are used to monitor seismic signals. The main unit is electrically connected to each sub-unit and is used to collect the seismic signals monitored by the sub-units. The connection unit is used to connect each sub-unit to the main unit and distribute the main unit and each sub-unit on a preset geometric array. The connection unit can connect the main unit and each sub-unit and keep the relative positions between each sub-unit and the main unit, and the relative positions between each sub-unit, constant before and after deployment. The main unit and each sub-unit are distributed on the preset geometric array to meet the requirements of in-situ monitoring of the seabed seismograph.

The invention discloses a multi-scale transformation seismic event detection method based on a seabed application scene, and relates to the technical field of seismic event detection. According to the seismic event detection method based on the multi-scale comprehensive transformation of the seabed application scene, a plurality of channel original signals are collected through a seabed seismograph, and a fusion feature vector is constructed through multi-scale time-frequency transformation; performing local event preliminary screening, generating an event packet, and reporting the event packet to the buoy node; in the buoy nodes, event packets uploaded by all the ocean bottom seismometers in the jurisdiction range of the buoy nodes are received, and a cluster report is generated and transmitted to the shore-based processing center after the weighted comprehensive confidence coefficient is analyzed; in a shore-based processing center, cluster event reports uploaded by all buoy nodes within the range where the shore-based processing center is located are received, and the global existence probability of the same event is analyzed. And determining the same event higher than a preset global existence probability threshold as a real seismic event.

The application discloses a kind of based on inertial trigger and multimodal perception's seabed seismograph intelligent recovery system, belong to marine geophysical exploration equipment technical field, including: sealed pressure cabin, and the main control unit of pressure cabin, capacitive inertial detection unit, attitude sensor, GPS module, data radio station module, LED flash group, power management module are set in the pressure cabin.The application has the advantages of simple structure, high reliability, low power consumption, high searching efficiency.