Holocene mass-transport activity and climate in outer Isfjorden, Spitsbergen: marine and subsurface evidence
Holocene mass-transport activity and climate in outer Isfjorden, Spitsbergen: marine and subsurface evidence
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斯匹次卑尔根岛外伊斯峡湾的全新世物质运输活动和气候：海洋和地下证据
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
T. Vorren
中科院分区：
文献类型：
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作者：
M. Forwick;T. Vorren
对斯匹次卑尔根岛伊斯峡湾的Svensksunddjupet盆地的高分辨率地震数据、条带测深数据和沉积物岩心的分析揭示了反复斜坡破坏的沉积物。大多数的边坡破坏发生在三个时期在c。9650口径BP、8350-8200口径BP和3000口径BP。造成斜坡不稳定的可能因素包括：地壳均衡快速上升造成的地震活动、相对海平面下降造成的超孔隙压力和/或天然气的存在以及气候变化。大众运输存款在Svensksunddjupet南坡的切口口建议主要涉及从陆地冰川Vardebreen径流。质量传输活动的增加可能表明Vardebreen在c处形成或尺寸增加。7000口径BP
The analyses of high-resolution seismic data, swath bathymetry data and sediment cores from the basin Svensksunddjupet in Isfjorden, Spitsbergen, reveal the deposits of repeated slope failures. Most of the slope failures occurred during three periods at c. 9650 cal. BP, 8350—8200 cal. BP and 3000 cal. BP. Suggested factors causing instability of the slopes include earthquake activity resulting from rapid isostatic uplift, excess pore pressure caused by relative sea-level fall and/or the presence of gas as well as climatic changes. Mass-transport deposits at the mouth of an incision at the southern slope of Svensksunddjupet are suggested to mainly relate to runoff from the land-based glacier Vardebreen. The increase of the mass-transport activity may indicate that Vardebreen either formed or increased in size at c. 7000 cal. BP.