Satellite-detected surface features in Dronning Maud Land ice shelves

• Main Authors: Lee, Ian, Van Oostveen, Jelte, Matsuoka, Kenichi
• Format: Dataset
• Language: unknown
• Published: npolar.no 2017
• Subjects: Dronning Maud Land; Stripe; Ice Shelf; Ice Shelves
• Online Access: https://dx.doi.org/10.21334/npolar.2017.7b7919c7; https://data.npolar.no/dataset/7b7919c7-004c-4085-9d6b-5f8e742a4914

### General This dataset provides satellite-detected surface features in Dronning Maud Land Ice Shelves that have been digitized. We used **RADARSAT-2** imagery (Wide fine mode with approximate resolutions of 5-8 m) collected between **_13 November 2014_** and **_4 December 2014_**. These features were categorized into 7 primary groups: (1) longitudinal stripes, (2) crevasses, (3) rifts, (4) ice rises and ice rumples, (5) blocks, (6) areas rich with above-mentioned features, (7) calving front. Because of high population of individual crevasses and rifts, we did not digitize all of them; we marked such high population areas and digitized some typical features to show their typical shapes and orientations. ### Feature Groups 1. **Longitudinal stripes** * Longitudinal stripe 2. **Crevasses** * Individual crevasses * Crevassed area 3. **Rifts** * Rift * Rifted Area 4. **Ice rises and ice rumples** * Isle-type ice rise and ice rumple * Promontory-type ice rise * Stripe on isle-type ice rise and ice rumple * Stripe on promontory-type ice rise * Cluster of small isle-type ice rises and ice rumples 5. **Blocks** * Iceberg * Area with many icebergs * Block within ice shelf 6. **Areas rich with above-mentioned features** * Area with crevasses and blocks * Area with crevasses and rifts * Area with crevasses and longitudinal stripes * Area with crevasses, rifts, and blocks * Onset area of short longitudinal stripes 7. **Calving front** * Calving front ### Date Formats The dataset has two separate shape files, (1) line features and (2) area (polygon) features. We also provide QGIS’s project file and style files with which these features in the two shape files are visualized together.