Download PDF by Ute Christina Herzfeld: Atlas of Antarctica: Topographic Maps from Geostatistical

By Ute Christina Herzfeld

ISBN-10: 3642185150

ISBN-13: 9783642185151

ISBN-10: 3642624189

ISBN-13: 9783642624186

Although it really is normally understood that the Antarctic Ice Sheet performs a serious position within the altering worldwide procedure, thus far there's a basic loss of on hand details at the topic. The Atlas of Antarctica is the 1st atlas at the 7th continent to be released in two decades. It comprises a hundred forty five exact topographic and elevation maps derived from satellite tv for pc facts (GEOSAT and ERS-1 radar altimeter data), that are the easiest in their sort on hand this day. each one map is observed via an outline of geographic and glaciological features.

The introductory chapters familiarise the reader with the realm of the Antarctic Ice Sheet and its position within the international approach, in addition to discussing satellite tv for pc distant sensing and geo-statistical equipment at textbook point. purposes contain designated neighborhood stories of 15 outlet glaciers of the inland ice, a few of that are presently altering quickly. combos with SAR facts facilitate the learn of floor buildings and stream features.

Despite its state of the art clinical accuracy, the Atlas of Antarctica isn't just meant to be used via researchers and scholars in glaciology, geophysics, distant sensing, cartography and Antarctic examine, but in addition informative and stress-free for any reader attracted to the 7th continent. The Atlas is followed by means of a CD-ROM containing all of the atlas maps and elevation versions – permitting the reader to find a wealth of attention-grabbing information in Antarctica!

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Extra resources for Atlas of Antarctica: Topographic Maps from Geostatistical Analysis of Satellite Radar Altimeter Data

Sample text

The necessity of appropriate software to evaluate survey line data was outlined earlier (Briggs 1974), one such algorithm is described in Herzfeld (1990). The interpolation method applied in the Antarctic Atlas project is kriging. Kriging methods are methods of geostatistical estimation. “Estimation” is probabilistic vocabulary, and corresponds to “interpolation and extrapolation” in the language of numerical analysis. For the analysis of altimeter data in the Atlas project, however, only interpolation and no extrapolation is needed, because the coverage of the Atlas maps matches the coverage of the Earth by satellite data.

Satellite radar altimeter data are geophysical line survey data. 1)). Radar altimeter data share these distribution properties with other geophysical or geological data from surveys that are carried out from vehicles that follow track lines: Aeromagnetics from planes, bathymetry from survey vessels, submarine magnetics or gravimetry from devices that are towed by ships, radio-echo soundings from sledges driven over a glacier. The resulting data distribution in any situation is characterized by dense information along the survey track and gaps of information in between.

Elevation also has the characteristics of a regionalized variable: Two points that are located close to each other are likely to have a similar elevation, they have similar elevation unless there is a cliff, mathematically a discontinuity, which is rare. As one moves farther away from a point with measured elevation, one is less likely able to predict the elevation that will be measured at another site, until a distance is reached beyond which prediction from the first measurement site is no longer possible.

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Atlas of Antarctica: Topographic Maps from Geostatistical Analysis of Satellite Radar Altimeter Data by Ute Christina Herzfeld


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