Topography Magnetic Gravity data for COB of PCB

The magetic data is downloaded from the EMAG2 and the grid accuracy is 2′. The gravity data comes from the satellite gravity data provided by the University of California in the United States, and the data grid also has an accuracy of 2'.<br>The topographic data was collected in 2014 by 'Xiangyanghong 10' vessel using SeaBeam3012 with the transmission frequency of 12 kHz. For the study area not covered by the survey data, the satellite altimetry data publicly published on the British Ocean Data Center GEBCO website is used, and the data grid accuracy is 30".