A new method of alternating shooting of two different seismic sources for deep geophysical surveys.

ABSTRACT: In the latest geophysical survey crossing the Ninety East Ridge of the Indian Ocean, a new method was employed to perform proportional double seismic source excitation and synchronously receive signals from the sea surface and the seabed. The two seismic sources used for excitation were two sets of gun arrays with different energies and dominant frequencies, a G gun array and a Bolt gun array. The G gun array consisted of 3 G.II guns with a total capacity of 450 in³ and a dominant frequency of 20-100 Hz. The Bolt gun array consisted of 4 Bolt 1500LL air guns with a total capacity of 6000 in³ and a dominant frequency of 10-40 Hz. The seismic receiving system comprised a 480-channel seismic streamer towed from the sea surface and 21 ocean bottom seismometers (OBS). Duri

SUBMITTER: Liu C 

PROVIDER: S-EPMC10279674 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature