Hydrate-bearing structures in the Sea of Okhotsk
Hydrate-bearing structures in the Sea of Okhotsk
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DOI：
10.1029/2005eo020001
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发表时间：
2005-01
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通讯作者：
H. Shoji;H. Minami;A. Hachikubo;H. Sakagami;K. Hyakutake;V. Soloviev;T. Matveeva;L. Mazurenko;V. Kaulio;Vyacheslav Gladysch;E. Logvina;A. Obzhirov;B. Baranov;O. Khlystov;N. Biebow;J. Poort;Y. Jin;Yeadong Kim
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作者：
H. Shoji;H. Minami;A. Hachikubo;H. Sakagami;K. Hyakutake;V. Soloviev;T. Matveeva;L. Mazurenko;V. Kaulio;Vyacheslav Gladysch;E. Logvina;A. Obzhirov;B. Baranov;O. Khlystov;N. Biebow;J. Poort;Y. Jin;Yeadong Kim
天然气水合物是冰状结晶固体中的天然气储集层，稳定地存在于水深超过300-500米的海底沉积物的孔隙空间中。世界上许多海洋都通过钻探在较大的海底深度(最高可达450米)和通过重力取心在较浅岩心的海底附近开采到了天然气水合物。在后一种情况下，天然气水合物与渗漏加剧的地点有关，如冷渗漏和泥火山[Ginsburg and Soloviev，1998]。在两次巡航期间进行的多学科实地调查发现，在太平洋西北边缘海鄂霍次克海出现了新的大型水合物渗漏结构(图L)。2003年8月和10月，在由五个国家的资助机构支持的CHOS项目(鄂霍次克海的碳氢化合物水合物聚集)框架内，在俄罗斯科学院(RAS)的R/V Akadymk M.A.Lavrentyev(LV)号两次巡航期间，对鄂霍次克海中部的德鲁金盆地进行了研究，那里是天然气渗漏和水合物密集聚集区。
Gas hydrates are natural gas reservoirs in ice-like crystalline solids, and are stable in pore spaces of submarine sediments in water depths greater than about 300–500 m. They have been recovered in many of the world's oceans, both at larger sub-bottom depths (up to 450 m) by drilling and near the seafloor in shallow cores by gravity-coring. In the latter case, the gas hydrates are related to the sites of enhanced seepage such as cold seeps and mud volcanoes [Ginsburg and Soloviev, 1998]. Multidisciplinary field investigations during the two cruises have revealed new, large hydrate-bearing seepage structures in the Sea of Okhotsk, a northwestern marginal sea of the Pacific Ocean (Figure l). The Derugin Basin at the central part of the Sea of Okhotsk, the zone of intensive gas seepage and hydrate accumulation, was studied during two cruises of the R/V Akademik M.A. Lavrentyev (LV) of the Russian Academy of Sciences (RAS), in August and October 2003 within the framework of the CHAOS project (hydroCarbon Hydrate Accumulations in the Okhotsk Sea) supported by funding agencies in five nations.