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    南海北部神狐海域地质环境综合调查及科学意义

    朱俊江 李三忠 陆敬安 康冬菊 牟泽霖 赵彦彦 陈朝晖 张晓华 杨国明 吴佳庆 宋德磊 王长盛 熊梓翔

    朱俊江, 李三忠, 陆敬安, 康冬菊, 牟泽霖, 赵彦彦, 陈朝晖, 张晓华, 杨国明, 吴佳庆, 宋德磊, 王长盛, 熊梓翔, 2020. 南海北部神狐海域地质环境综合调查及科学意义. 地球科学, 45(4): 1416-1426. doi: 10.3799/dqkx.2019.109
    引用本文: 朱俊江, 李三忠, 陆敬安, 康冬菊, 牟泽霖, 赵彦彦, 陈朝晖, 张晓华, 杨国明, 吴佳庆, 宋德磊, 王长盛, 熊梓翔, 2020. 南海北部神狐海域地质环境综合调查及科学意义. 地球科学, 45(4): 1416-1426. doi: 10.3799/dqkx.2019.109
    Zhu Junjiang, Li Sanzhong, Lu Jing'an, Kang Dongju, Mu Zelin, Zhao Yanyan, Chen Zhaohui, Zhang Xiaohua, Yang Guoming, Wu Jiaqing, Song Delei, Wang Changsheng, Xiong Zixiang, 2020. Scientific Implications and Preliminary Surveying Results of Geological and Physical Oceanography Environment in the Shenhu Area of the Northern South China Sea. Earth Science, 45(4): 1416-1426. doi: 10.3799/dqkx.2019.109
    Citation: Zhu Junjiang, Li Sanzhong, Lu Jing'an, Kang Dongju, Mu Zelin, Zhao Yanyan, Chen Zhaohui, Zhang Xiaohua, Yang Guoming, Wu Jiaqing, Song Delei, Wang Changsheng, Xiong Zixiang, 2020. Scientific Implications and Preliminary Surveying Results of Geological and Physical Oceanography Environment in the Shenhu Area of the Northern South China Sea. Earth Science, 45(4): 1416-1426. doi: 10.3799/dqkx.2019.109

    南海北部神狐海域地质环境综合调查及科学意义

    doi: 10.3799/dqkx.2019.109
    基金项目: 

    广州海洋地调查局地质调查项目 2018c-03-186

    广州海洋地调查局地质调查项目 20190226

    青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室自主课题资助项目 MMRZZ201802

    山东省自然科学基金面上项目 ZR2019MD036

    国家自然科学基金重点项目 41831280

    国家自然科学基金重点项目 91958284

    中国海洋大学人才工程项目 201812016

    山东省泰山学者特聘教授项目、国家重点研发计划 2017YFC0601400-1

    详细信息
      作者简介:

      朱俊江(1976-), 男, 教授, 主要从事海洋地质与地球物理研究.E-mail:zhujunjiang@ouc.edu.cn

    • 中图分类号: P717

    Scientific Implications and Preliminary Surveying Results of Geological and Physical Oceanography Environment in the Shenhu Area of the Northern South China Sea

    • 摘要: 在南海北部神狐海域水合物活跃区域开展了一次综合的海洋地质、物理海洋和生态环境调查,10个站位分布在水深1 000~4 000 m范围内的陆坡和深水盆地区域,是南海北部油气活跃的重要区域和天然气水合物试采区域.航次主要对10个海底站位进行了表层沉积物箱式和重力活塞柱状取样.针对天然气水合物试采区域,开展了一台"海燕"水下滑翔机的海洋物理环境连续走航剖面观测.利用海底地震仪在两个站位开展了连续海底地震和微振动观测.进行了站位的分层水体和沉积物样品中微生物学实验研究.初步航次结果展示了沉积物为黏土和软泥.站位和水下滑翔机走航观测提供了水体内海洋物理环境参数变化特征.海底地震仪观测展示了研究区天然地震活动和可能与水合物活动有关的微震动和短持续事件记录.微生物学实验揭示了沉积物中的微生物细菌群落特征.

       

    • 图  1  南海北部神狐海域取样站位位置

      红圆点为10个箱式和重力活塞取样站位,其中在站位S02和S03布放了2台宽频带海底地震仪.红箭头虚线为水下滑翔机的轨迹线.红三角为2019年2月28日至3月08日的区域天然地震震中位置,详细参数见表 1表 2.图中标注海底200 m、1 000 m、2 000 m和3 000 m等深线

      Fig.  1.  Location map of the sampling sites in the Shenhu area in the northern South China Sea

      图  2  航次使用的取样装置和观测设备

      a.箱式取样器;b.重力活塞取样器装置;c.站位温盐深(CTD)和取水器装置;d.布放取水样装置;e.海底地震仪甲板设置;f.海底地震仪回收;g.水下滑翔机甲板准备;h.水下滑翔机投放

      Fig.  2.  Onboard sampling devices and surveying equipments of the cruise

      图  3  海洋地质物理环境综合调查流程图

      Fig.  3.  Flow chart of the marine geology and physical oceanography environment

      图  4  站位S02表层箱式样品和重力活塞柱状样剖开样品

      a.表层0~60 cm箱式样品;b.重力活塞0~0.5 m柱状样;c.重力活塞7.70~8.13 m柱状样

      Fig.  4.  Box corer and split columned sample of the gravity-piston corers from the site S02

      图  5  水下滑翔机连续走航观测水体温度和盐度剖面

      Fig.  5.  The temperature and salinity profile from the continuous underway observation from the underwater glider

      图  6  站位S02和S11声速、温度和盐度随深度变化

      蓝色曲线为站位S02,红色曲线为站位S11

      Fig.  6.  Sound velocity, temperature and salinity variations with water depth from the sites S02 and S11

      图  7  站位表层沉积物细菌群落(门水平)分布(高通量分析结果)

      Fig.  7.  The percent of bacterial community abundance (phylum level) of surface sediment on the sites

      图  8  站位S02宽频带海底地震仪垂直分量记录到的地震事件

      Fig.  8.  Seismic events recoded by the vertical component of an ocean bottom seismometer on the site S02

      表  1  南海及华南天然地震参数

      Table  1.   Earthquake parameters in South China and adjacent of the South China Sea

      发震日期 时间 纬度(°N) 经度(°E) 震源深度(km) 震级(ML) 震中位置
      2019-03-07 14:42:01.0 21.74 111.77 10 0.6 广东阳西
      2019-03-07 11:49:03.0 20.97 120.24 28 4.3 台湾屏东
      2019-03-06 20:47:32.0 23.92 114.49 10 0.2 广东东源
      2019-03-06 18:09:20.0 22.40 111.33 9 1.8 广东信宜
      2019-03-06 17:06:28.0 23.72 114.66 7 0.6 广东河源
      2019-03-05 20:55:09.0 21.74 111.81 12 0.4 广东阳江
      2019-03-05 15:03:39.0 23.37 118.55 13 2.1 台湾海峡
      2019-03-05 13:55:11.0 21.75 111.78 8 0.1 广东阳西
      2019-03-04 18:16:06.0 21.75 111.83 11 0.6 广东阳江
      2019-03-04 13:43:10.0 23.92 114.48 10 0.2 广东东源
      2019-03-04 12:17:30.0 23.73 114.69 9 0.6 广东河源
      2019-03-04 10:53:22.0 23.92 114.48 10 0.1 广东东源
      2019-03-04 10:52:50.0 23.92 114.48 10 0.1 广东东源
      2019-03-04 07:38:37.0 21.79 111.79 18 0.7 广东阳西
      2019-03-03 08:45:10.0 23.36 118.54 11 1.8 台湾海峡
      2019-03-03 04:34:26.0 21.26 121.50 7 3.3 南海海域
      2019-03-02 23:12:28.0 23.36 118.54 3 2.1 台湾海峡
      2019-03-02 19:28:48.0 23.35 117.45 16 0.5 福建东山
      2019-03-02 00:20:11.0 23.33 118.59 10 1.6 台湾海峡
      2019-03-02 00:06:26.0 23.75 114.64 9 0.4 广东河源
      2019-03-01 19:26:53.0 21.72 111.78 12 0.3 广东阳西
      2019-03-01 10:22:56.0 21.73 111.81 8 0.1 广东阳江
      2019-02-28 21:31:39.0 23.13 113.09 12 1.5 广东南海
      2019-02-28 15:57:14.0 21.78 112.28 9 0.2 广东阳东
      2019-02-26 22:15:33.0 21.74 111.80 11 0.1 广东阳江
      2019-02-26 02:03:23.0 22.31 110.26 9 1.0 广西陆川
      2019-02-26 02:03:23.0 22.31 110.26 9 1.0 广西陆川
      注:时间范围从2019年2月26日至3月8日;区域范围北纬15°~24°,东经110°~121°.数据据中国地震台网中心数据(http://www.ceic.ac.cn/history).
      下载: 导出CSV

      表  2  南海及马尼拉海沟附近天然地震参数

      Table  2.   Earthquake parameters in the Manila trench and adjacent of the South China Sea

      发震日期 时间 纬度(°N) 经度(°E) 震源深度(km) 震级 震中位置
      2019-03-08 02:32:14.543 22.459 5 121.457 1 13.00 5.4 Mw 台东
      2019-03-07 03:49:01.820 20.843 2 120.339 3 10.00 4.9 Mb 台湾恒春
      2019-03-02 20:34:25.560 20.896 5 121.589 1 61.70 4.5 Mb 菲律宾伊巴雅特
      2019-03-02 19:49:24.210 18.625 8 120.346 0 10.00 4.9 Mb 菲律宾达维拉
      2019-03-02 19:46:21.720 18.654 2 120.356 2 15.68 5.6 Mw 菲律宾达维拉
      2019-03-01 20:51:28.150 17.058 0 120.641 3 115.48 4.5 Mb 菲律宾沙该
      注:时间范围从2019年2月26日至3月8日;区域范围北纬15°~24°,东经110°~122°.数据据美国地质调查局(USGS)地震目录数据(https://earthquake.usgs.gov/earthquakes/search/).
      下载: 导出CSV
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    • 收稿日期:  2019-05-22
    • 刊出日期:  2020-04-15

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