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Seismic Attributes of the Acoustic Basement in the Central Arctic Region
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE 2020 Annual Conference & Exhibition Online, Dec 2020, Volume 2020, p.1 - 5
Abstract
For the Russian extended continental shelf project, regional seismic data - 2D MCS (multichannel seismic) and wide-angle reflection/refraction seismic sonobuoy soundings were obtained in the Arctic Ocean in 2011, 2012 and 2014 years. Combining MCS data and sonobuoys data, reflection and refraction seismic data allowed to construct a reliable velocity model and to reveal seismic attributes of the basement in the Central Arctic region.
An intermediate complex (INM) is clearly identified throughout all parts of the Arctic Ocean with P-wave interval velocities 4.2–5.3 km/s.
Converted waves were discovered on sonobuoy records in central part of Podvodnikov Basin, the ratio VP/VS = 1.71.
The distribution of P-waves interval velocities in the crystalline basement of the Central Arctic region is presented