CAGE20-5巡航报告:西斯瓦尔巴边缘的构造应力研究和地震调查

CAGE – Centre for Arctic Gas Hydrate Environment and Climate Report Series Pub Date : 2023-01-23 DOI:10.7557/cage.6914

Stefan Bünz

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引用次数: 1

摘要

CAGE20-5的主要目标是继续进行海底地震仪(OBS)实验，以解决SEAMSTRESS项目的目标(构造应力对北极甲烷渗漏的影响[SB1])。在Vestnesa Ridge的东段，经过一年的部署，该巡航回收了7个OBS，随后在Vestnesa Ridge的南侧重新部署了10个OBS。总体目标是探测与Vestnesa Ridge内的局部断层有关和/或影响当地断层的局部和区域地震，并可能控制流体流动。CAGE20-5的另一个目标是收集地震线，以完善数据库，并为IODP985方案优化选址。我们还收集了Knipovich Ridge北部细长凹陷的三维地震数据，在那里观测到大量的天然气水合物和孔隙流体压力脉冲。这次巡航可能被称为:CAGE20_5

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CAGE20-5 Cruise Report: Tectonic stress studies and seismic surveys on the West-Svalbard margin

Tha main goal of CAGE20-5 cruise was to continue with an Ocean Bottom Seismometer (OBS) experiment to address objectives of the SEAMSTRESS project (Tectonic stress effects on Arctic methane seepage[SB1] ). Along the eastern segment of Vestnesa Ridge, the cruise recovered 7 OBS after a one-year deployment and subsequentially redeployed 10 OBS in the larger array on the southern flank of Vestnesa Ridge. The overall aim is to detect local and regional earthquakes that relate to and/or impact local faulting within Vestnesa Ridge and may control fluid flow. Another objective of CAGE20-5 was to collect seismic lines to complete the data base and refine site selections for the IODP985 proposal. We also collected a 3D seismic volume on the elongated depression north of Knipovich Ridge where massive gas hydrates and pore fluid pressure pulses from piezometer data have been observed The cruise may be known as: CAGE20_5

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CAGE – Centre for Arctic Gas Hydrate Environment and Climate Report Series

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