High-resolution elevation mapping of the McMurdo Dry Valleys, Antarctica, and surrounding regions
نویسندگان
چکیده
منابع مشابه
Accelerated thermokarst formation in the McMurdo Dry Valleys, Antarctica
Thermokarst is a land surface lowered and disrupted by melting ground ice. Thermokarst is a major driver of landscape change in the Arctic, but has been considered to be a minor process in Antarctica. Here, we use ground-based and airborne LiDAR coupled with timelapse imaging and meteorological data to show that 1) thermokarst formation has accelerated in Garwood Valley, Antarctica; 2) the rate...
متن کاملInfluence of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica.
Archaea are the least understood members of the microbial community in Antarctic mineral soils. Although their occurrence in Antarctic coastal soils has been previously documented, little is known about their distribution in soils across the McMurdo Dry Valleys, Victoria Land. In this study, terminal-restriction fragment length polymorphism (t-RFLP) analysis and 454 pyrosequencing were coupled ...
متن کاملQuantifying sulfate components and their variations in soils of the McMurdo Dry Valleys, Antarctica
[1] Many soils of the McMurdo Dry Valleys (MDV), Antarctica, being old, hyperarid, and frigid, have accumulated abundant atmospheric salts over the last several million years. This salt repository offers an opportunity to study atmospheric chemistry (past and present), the origin and transport of ions in soils, the weathering activity of soils, and postdepositional soil-leaching processes withi...
متن کاملPerchlorate and chlorate biogeochemistry in ice-covered lakes of the McMurdo Dry Valleys, Antarctica
We measured chlorate (ClO3 ) and perchlorate (ClO4 ) concentrations in ice covered lakes of the McMurdo Dry Valleys (MDVs) of Antarctica, to evaluate their role in the ecology and geochemical evolution of the lakes. ClO3 and ClO4 are present throughout the MDV Lakes, streams, and other surface water bodies. ClO3 and ClO4 originate in the atmosphere and are transported to the lakes by surface in...
متن کاملThe biogeochemistry of nitrous oxide in permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica
This manuscript presents an overview of published work on nitrous oxide in the permanently ice-covered lakes of the McMurdo Dry Valleys, Antarctica. One of these lakes contains the highest concentration of nitrous oxide reported for natural aquatic systems (> 500 000% with respect to the global average mixing ratio in air). Recent data on nitrous oxide from the major lakes in this region of Ant...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Earth System Science Data
سال: 2017
ISSN: 1866-3516
DOI: 10.5194/essd-9-435-2017