Prof. Renat B. Shakirov
Prof. Renat B. Shakirov
Title: Geological control of the submarine gas hydrate resources in the Western Pacific/Eastern Asia
Margins of Pacific Ocean present numerous gashydrates sites, distributed as Gashydrates Provinces (referred to the offshore areas) which can be combined to the East Asia Gashydrate Belt as a part of Pacific Gashydrate Rim. Gas (mainly methane) hydrates accumulation induced by varies active geological features determined by geodynamic and tectonic type and seismic state’s of Pacific and adjoining lithosphere plate’s borders. Bering Sea, Okhotsk Sea, Japan Sea, East-China Sea, South-China Sea and southward to New Zealand offshore exposed methane hydrates distribution in sediments. Hydroacoustic, seismics, coring and geochemistry were a prime methods applied to gashydrate searching and exploration. Methane hydrates was explored since 86-th (Okhotsk Sea). The distribution of gas hydrates are related genetically with hydrocarbon accumulations within the thick Cenozoic sediment basins (up to 10 km thickness), and controlled particularly by active faulting belongs to transform and convergent plate’s borders. Fracture type gas hydrate sediments filling is the most promising (massive gas hydrates). Accretionary prisms along the subduction zones considered lithology gas hydrate filling (dispersed gas hydrates). Modern high seismic activity cause fault’s activities that break through the sea floor and create a favorable gas-permeable state along shear zones. Submarine gas seepage usually accompanied by contrast seismic and acoustic anomalies in the sediments and water column (up to 700 gas flares prior to 2015 indicates gas hydrate fracture type accumulation in Okhotsk and Japan Seas). We recovered gas hydrates up to 35 cm thick pieces by hydrocoring. Pleistocene-Holocene is most studied gas hydrate bearing sediments (upper hydrate distribution, coring sampled 0-10 meters bsf). Second floor of gashydrate was proved by drilling e.x. in the northern South-China Sea for 170-230 m bsf (Wu, 2011; Chun, 2012). Methane origin discussed as mixture of abiogenic, metamorphic, thermogenic and biogenic gases. Methane resources trapped in Western Pacific gas hydrates can be estimated based on latest investigations at least for  5×10^{12-14?} cubic meters, but this under discussion. Very new gashydrates were found by us in the north of Japan Sea and in the south-west of the Sea of Okhotsk in 2015-2016.
Renat B. Shakirov (birthday 24/02/1975) is a Doctor of Geological and Mineralogical Sciences and Head of Gasgeochemistry laboratory in POI FEB RAS (Vladivostok City, Far East of Russia). Previously, he was a Senior Researcher of POI FEB RAS (Russia), assistant professor of Far Eastern National University (FENU, Russia) and Post-doctoral Fellow at the New Energy Resources Research Center, Kitami Institute of Technology (Japan). He holds a Master at the FENU and a PhD degree in POI FEB RAS. He has published more than 160 papers in journals, books, cruise reports and conference proceedings, including more than 20 papers in journals indexed in the Web of Science – Journal Citation Reports such as Geo-Marine Letters, Polar Meteorology and Glaciology, Polar Biology, Reports of Russian Academy of Sciences, Oceanology, Water Resources, Geochemistry, Lithology and Mineral Resources et cet. He has also published 4 books in Publishing House of Far Eastern Branch of Russian Academy of Sciences. He has a patent for intensified methane recovery from the coal beds and number of scientific and technological awards in the field of hydrocarbons. He is on the editorial board of 2 journals including "Geo-systems of transitional zones". Dr. Shakirov has participated in the scientific committee of several conferences and associations and serves as a reviewer in the domestic and international journals. He was responsible scientists and head of more than 33 research cruises in the Sea of Okhotsk, Japan Sea, Bering Sea, East-Siberian Sea, Chukchi Sea, South-China Sea and Baikal Lake. He participated in the state geological and geophysical expeditions 2006-2009, also as a head of cruise (2007), which were resulted in the officially handed over to Russia on the recognition of the Sea of Okhotsk completely Russian by the UN Commission on the Continental Shelf in 2014. Currently, he is focused on natural gashydrates, relation of gas fluxes and geodynamics, natural greenhouse gases distribution and applications in offshore geological and geophysical research methods on hydrocarbons searching, as well as developing of new direction of gasgeochemistry zoning and monitoring using in situ and remote methods. The main area of his research is Asia-Pacific super-region and Eastern Arctic, both onshore and offshore.