Inferring ice-flow directions from single ice-sheet surface images using the Radon transform

被引：3
|
作者：
Roberts, Jason L. [1 ,2 ]
Warner, Roland C. [1 ,2 ]
Treverrow, Adam [2 ]
机构：
[1] Australian Antarctic Div, Dept Sustainabil Environm Water Populat & Communi, Hobart, Tas, Australia
[2] Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia
来源：
JOURNAL OF GLACIOLOGY | 2013年 / 59卷 / 213期
关键词：
EAST ANTARCTICA; BALANCE VELOCITIES; SHELF; BOUNDARIES; STRIPES; RADAR; BASIN;
D O I：
10.3189/2013JoG12J042
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
We present a new method for extracting the direction of surface flow for ice sheets, based on the detection of flow-induced features that are visible in satellite imagery. The orientation of linear features is determined using a Radon transform and only requires a single image. The technique is demonstrated by applying it to the RADARSAT mosaic of Antarctica, over the Lambert Glacier-Amery Ice Shelf region of East Antarctica. Comparisons with both existing flow-direction fields and traced streamlines over the same area provide an evaluation of the method. We also illustrate its application to Landsat 7 imagery.
引用
收藏
页码：129 / 136
页数：8
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