气候变化领域集成服务门户(CCPortal): Relative phase shift and oscillation observations at moorings in the Filchner Depression area

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DOI	https://doi.org/10.1594/PANGAEA.808593
	Relative phase shift and oscillation observations at moorings in the Filchner Depression area
	Darelius; Elin; Smedsrud; Lars Henrik; Østerhus; Svein; Foldvik; Arne; Gammelsrød; Tor
发布日期	2009-03-07
数据集类型	dataset
英文简介	Properties of the dense ice shelf water plume emerging from the Filchner Depression in the southwestern Weddell Sea are described, using available current meter records and CTD stations. A mean hydrography, based on more than 300 CTD stations gathered over 25 yr points to a cold, relatively thin and vertically well-defined plume east of the two ridges cross-cutting the continental slope about 60 km from the Filchner sill, whereas the dense bottom layer is warmer, more stratified and much thicker west of these ridges. The data partly confirm the three major pathways suggested earlier and agree with recent theories on topographic steering by submarine ridges. A surprisingly high mesoscale variability in the overflow region is documented and discussed. The variability is to a large extent due to three distinct oscillations (with periods of about 35 h, 3 and 6 d) seen in both temperature and velocity records on the slope. The oscillations are episodic, barotropic and have a horizontal scale of ~20-40 km across the slope. They are partly geographically separated, with the longer period being stronger on the lower part of the slope and the shorter on the upper part of the slope. Energy levels are lower west of the ridges, and in the Filchner Depression. The observations are discussed in relation to existing theories on eddies, commonly generated in plumes, and continental shelf waves.
空间范围	Median Latitude: -74.349632 * Median Longitude: -36.110859 * South-bound Latitude: -75.033300 * West-bound Longitude: -38.600000 * North-bound Latitude: -73.716670 * East-bound Longitude: -33.550000
时间范围	1998-01-22T13:00:00 - 1999-02-23T13:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/219984
推荐引用方式 GB/T 7714	Darelius,Elin,Smedsrud,et al. Relative phase shift and oscillation observations at moorings in the Filchner Depression area.2009-03-07.https://doi.org/10.1594/PANGAEA.808593.