Seismic evidence of gas hydrates and free gas in the western Ross Sea (Antarctica) is inferred from the occurrence of a bottom simulating reflector. It evolves into cross-cutting reflectors and enhanced-amplitude reflectors from the deeper basin to an intra-basin struc- tural high. In addition to the seismic data, the presence of free gas is suggested by the occurrence of gas-seeping seafloor morphologies like mud volcanoes and pock- marks. The upward gas migration is controlled by the presence of faults, connecting the free gas zone below the BSR to the mud volcanoes and pockmarks on the seafloor.
Bottom Simulating Reflector in the western Ross Sea, Antarctica
Geletti R;Busetti M
2022-01-01
Abstract
Seismic evidence of gas hydrates and free gas in the western Ross Sea (Antarctica) is inferred from the occurrence of a bottom simulating reflector. It evolves into cross-cutting reflectors and enhanced-amplitude reflectors from the deeper basin to an intra-basin struc- tural high. In addition to the seismic data, the presence of free gas is suggested by the occurrence of gas-seeping seafloor morphologies like mud volcanoes and pock- marks. The upward gas migration is controlled by the presence of faults, connecting the free gas zone below the BSR to the mud volcanoes and pockmarks on the seafloor.File in questo prodotto:
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