Analyzing Antarctic ice sheet snowmelt with dynamic Big Earth Data
نویسندگان
چکیده
منابع مشابه
Ice flow of the Antarctic ice sheet.
We present a reference, comprehensive, high-resolution, digital mosaic of ice motion in Antarctica assembled from multiple satellite interferometric synthetic-aperture radar data acquired during the International Polar Year 2007 to 2009. The data reveal widespread, patterned, enhanced flow with tributary glaciers reaching hundreds to thousands of kilometers inland over the entire continent. Thi...
متن کاملDynamic Antarctic ice sheet during the early to mid-Miocene.
Geological data indicate that there were major variations in Antarctic ice sheet volume and extent during the early to mid-Miocene. Simulating such large-scale changes is problematic because of a strong hysteresis effect, which results in stability once the ice sheets have reached continental size. A relatively narrow range of atmospheric CO2 concentrations indicated by proxy records exacerbate...
متن کاملWest Antarctic Ice Sheet Initiative
The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present-day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is estimated from accumulation vs. iceberg calving and the basal melting that occurs beneath floating ice shelves. Iceberg calving is derived from ...
متن کاملAnalyzing Big Data with Dynamic Quantum Clustering
How does one search for a needle in a multi-dimensional haystack without knowing what a needle is and without knowing if there is one in the haystack? This kind of problem requires a paradigm shift away from hypothesis driven searches of the data towards a methodology that lets the data speak for itself. Dynamic Quantum Clustering (DQC) is such a methodology. DQC is a powerful visual method tha...
متن کاملSeasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data
Time-series microwave satellite observations are used to investigate seasonal and interannual changes in the surface characteristics of the Antarctic ice sheet. Enhanced-resolution Cband ERS-1/2 scatterometer (ESCAT) backscatter and DMSP SSMI brightness temperature images of Antarctica, acquired on a 3-day interval between 1992 and 1997, have been analysed. Both ESCAT and SSMI data show a clear...
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ژورنال
عنوان ژورنال: International Journal of Digital Earth
سال: 2020
ISSN: 1753-8947,1753-8955
DOI: 10.1080/17538947.2020.1798522