Roughness anisotropy calculated at flightline intersections of the 2018 and 2022 NEGIS surveys, Northeast Greenland Ice Stream, downstream of the EastGRIP ice core site
Fuente:
PANGAEA
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Dataset Open Access |
| Langue: | en |
| Publié: |
PANGAEA
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1867171345523015680 |
|---|---|
| author | Carter, Charlotte Franke, Steven Jansen, Daniela Eisen, Olaf |
| author_facet | Carter, Charlotte Franke, Steven Jansen, Daniela Eisen, Olaf |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Northeast Greenland Ice Stream (NEGIS) is an elongated feature extending ~600 km into the interior of the Greenland Ice Sheet. Here, we investigate detailed subglacial topography along the length of the NEGIS to ascertain the characteristics of the ice stream bed. Spatial topographic roughness describes the standard deviation of vertical change in bed elevation over a given horizontal distance (Root Mean Square height, or RMSh). RMSh values were derived from ice thickness data from AWI's P5-233_NEGIS_2022 and P6-211_EGRIP_NOR_2018 flight campaigns, where the majority of profiles were oriented parallel or perpendicular to ice flow direction. A moving window size of 960 m (64 data points) was used to calculate RMSh, and values are omitted where gaps in the ice thickness data were present. Roughness anisotropy was also calculated at the intersection of two flightlines, as the ratio between along- and across-flow roughness. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_984361 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Roughness anisotropy calculated at flightline intersections of the 2018 and 2022 NEGIS surveys, Northeast Greenland Ice Stream, downstream of the EastGRIP ice core site Carter, Charlotte Franke, Steven Jansen, Daniela Eisen, Olaf AC; Aircraft; Arctic; AWI UWB; Bed elevation; East Greenland Ice-core Project; EGRIP; EGRIP-NOR; EGRIP-NOR-18; LATITUDE; Line ID; LONGITUDE; MULT; Multiple investigations; NEGIS-FLOW, NEGIS-ANISO, NEGIS Folds; Northeast Greenland Ice Stream (NEGIS); P5_233_NEGIS_2022_2206030202; P5_233_NEGIS_2022_2206070301; P5_233_NEGIS_2022_2206080401; P5_233_NEGIS_2022_2206090501; P5_233_NEGIS_2022_2206100601; P5_233_NEGIS_2022_2206110701; P5_233_NEGIS_2022_2206120801; P5_233_NEGIS_2022_2206130901; P5_233_NEGIS_2022_2206161001; P5-233_NEGIS_2022; P6-211_EGRIP_NOR_2018; Point ID; POLAR 5; POLAR 6; radio echo sounding; Root mean square height; Roughness; Roughness anisotropy The Northeast Greenland Ice Stream (NEGIS) is an elongated feature extending ~600 km into the interior of the Greenland Ice Sheet. Here, we investigate detailed subglacial topography along the length of the NEGIS to ascertain the characteristics of the ice stream bed. Spatial topographic roughness describes the standard deviation of vertical change in bed elevation over a given horizontal distance (Root Mean Square height, or RMSh). RMSh values were derived from ice thickness data from AWI's P5-233_NEGIS_2022 and P6-211_EGRIP_NOR_2018 flight campaigns, where the majority of profiles were oriented parallel or perpendicular to ice flow direction. A moving window size of 960 m (64 data points) was used to calculate RMSh, and values are omitted where gaps in the ice thickness data were present. Roughness anisotropy was also calculated at the intersection of two flightlines, as the ratio between along- and across-flow roughness. |
| title | Roughness anisotropy calculated at flightline intersections of the 2018 and 2022 NEGIS surveys, Northeast Greenland Ice Stream, downstream of the EastGRIP ice core site |
| topic | AC; Aircraft; Arctic; AWI UWB; Bed elevation; East Greenland Ice-core Project; EGRIP; EGRIP-NOR; EGRIP-NOR-18; LATITUDE; Line ID; LONGITUDE; MULT; Multiple investigations; NEGIS-FLOW, NEGIS-ANISO, NEGIS Folds; Northeast Greenland Ice Stream (NEGIS); P5_233_NEGIS_2022_2206030202; P5_233_NEGIS_2022_2206070301; P5_233_NEGIS_2022_2206080401; P5_233_NEGIS_2022_2206090501; P5_233_NEGIS_2022_2206100601; P5_233_NEGIS_2022_2206110701; P5_233_NEGIS_2022_2206120801; P5_233_NEGIS_2022_2206130901; P5_233_NEGIS_2022_2206161001; P5-233_NEGIS_2022; P6-211_EGRIP_NOR_2018; Point ID; POLAR 5; POLAR 6; radio echo sounding; Root mean square height; Roughness; Roughness anisotropy |
| url | https://doi.org/10.1594/PANGAEA.984361 |