气候变化领域集成服务门户(CCPortal): (Table 1) Moisture content of buried snowpack deposit samples from Pearse Valley, McMurdo Dry Valleys

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.810715
	(Table 1) Moisture content of buried snowpack deposit samples from Pearse Valley, McMurdo Dry Valleys
	Heldmann; J L; Marinova; M; Williams; K E; Lacelle; Denis; McKay; Christopher P; Davila; A; Pollard; W; Andersen; D T
发布日期	2012-04-26
数据集类型	dataset
英文简介	Buried snowpack deposits are found within the McMurdo Dry Valleys of Antarctica, which offers the opportunity to study these layered structures of sand and ice within a polar desert environment. Four discrete buried snowpacks are studied within Pearse Valley, Antarctica, through in situ observations, sample analyses, O-H isotope measurements and numerical modelling of snowpack stability and evolution. The buried snowpack deposits evolve throughout the year and undergo deposition, melt, refreeze, and sublimation. We demonstrate how the deposition and subsequent burial of snow can preserve the snowpacks in the Dry Valleys. The modelled lifetimes of the buried snowpacks are dependent upon subsurface stratigraphy but are typically less than one year if the lag thickness is less than c. 7 cm and snow thickness is less than c. 10 cm, indicating that some of the Antarctic buried snowpacks form annually. Buried snowpacks in the Antarctic polar desert may serve as analogues for similar deposits on Mars and may be applicable to observations of the north polar erg, buried ice at the Mars Phoenix landing site, and observations of buried ice throughout the martian Arctic. Numerical modelling suggests that seasonal snows and subsequent burial are not required to preserve the snow and ice on Mars.
空间范围	Latitude: -77.707400 * Longitude: 161.596300
时间范围	2009-11-23T00:00:00 - 2009-11-23T00:00:00
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/217592
推荐引用方式 GB/T 7714	Heldmann,J L,Marinova,et al. (Table 1) Moisture content of buried snowpack deposit samples from Pearse Valley, McMurdo Dry Valleys.2012-04-26.https://doi.org/10.1594/PANGAEA.810715.