Tectonic pumping:: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan
Tectonic pumping:: earthquake-induced chemical flux detected in situ by a submarine cable experiment in Sagami Bay, Japan
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DOI：
10.2183/pjab/83.199
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发表时间：
2007-10-01
影响因子：
3.1
通讯作者：
Asakawa, Kenichi
中科院分区：
文献类型：
--
作者：
Gamo, Toshitaka;Okamura, Kei;Asakawa, Kenichi
我们成功地部署了一个在现场的自动化学分析仪敏感的锰（Mn）在海水中的一个为期81天的第一次在深海海底的相模湾沿着收敛板块边界的日本南部。现场锰分析仪（GAMOS-IV）连接到海底电缆作为一种手段，以提供电力和中继真实的时间数据。在2006年4月5日至6月25日的观测期间，仅在4月21日观测到测得的Mn量突然增加到背景水平的10倍，可能是由发生在观测点西南偏南7 km处的M5.8地震触发的。这项研究表明，海底电缆适用于深海环境的长期地球化学监测。
We successfully deployed an in situ automatic chemical analyzer sensitive to manganese (Mn) in seawater for a period of 81 days for the first time on the deep seafloor of Sagami Bay along a convergent plate boundary south of Japan. The in situ Mn analyzer (GAMOS-IV) was connected to a submarine cable as a means to supply power and to relay real time data. During the observation period from April 5 till June 25, 2006, the amount of measured Mn was seen to increase abruptly up to 10 times that of the background level only on April 21, probably triggered by a M5.8 earthquake which occurred similar to 7km south-southwest of the observation site. This study demonstrates the suitability of submarine cables for the long-term geochemical monitoring of deep sea environments.