Deep-tow survey in the KAIKO-Nankai cold seepage areas
Deep-tow survey in the KAIKO-Nankai cold seepage areas
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KAIKO-南海冷渗区深拖勘察
DOI：
10.1016/0012-821x(92)90097-f
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发表时间：
1992
影响因子：
5.3
通讯作者：
T. Yamagata
中科院分区：
文献类型：
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作者：
Kyoko Kobayashi;J. Ashi;J. Boulègue;H. Cambray;N. Chamot‐Rooke;H. Fujimoto;T. Furuta;J. Iiyama;T. Koizumi;K. Mitsuzawa;H. Monma;M. Murayama;J. Naka;M. Nakanishi;Y. Ogawa;K. Otsuka;M. Okada;A. Oshida;N. Shima;W. Soh;A. Takeuchi;Masaharu Watanabe;T. Yamagata
利用深拖曳电视系统对南开海槽东部与冷喷口有关的深海生物群落进行了定位。观测到5条连续的线（长约200公里）。在天龙峡谷出口区和大前崎角外的增生楔锋面逆冲的露头处都发现了双壳类群落。前者是1985年KAIKO潜水时发现生物群落的地点。然而，第二个地点似乎与更大规模的排气有关，并被选为1989年KAIKO-Nankai潜水巡航。在海床地形图上发现了三座直径几百米、高几十米的小型泥火山，但目前的调查既没有发现最近喷发的证据，也没有发现生物群落。
Deep-sea biological communities associated with cold venting were located within the eastern portion of the Nankai Trough using a deep-towed TV system. Five continuous lines (approximately 200 km long) were observed. Bivalve communities were found both in the Tenryu Canyon outlet region and at the outcrop of the frontal thrusts of the accretionary wedge off Cape Omaezaki. The former is a site at which biological communities had been found during the KAIKO dives in 1985. However, the second site appears to be associated with larger scale venting and was chosen for the 1989 KAIKO-Nankai submersible cruise. Three small mud volcanoes with diameters of several hundred meters and heights of several tens of meters are found in the Seabeam topography map, but the present survey showed neither evidence of recent venting nor biological communities.