Ice thickness and bed elevation of the Northern and Southern Patagonian Icefields

The Northern and Southern Patagonian Icefields are the largest ice masses in the Southern Hemisphere outside Antarctica, but their ice volume and bed topography are poorly known. We combine airborne gravity data collected in 2012 and 2016, with radar data from the Warm Ice Experiment Sounder and Centro de Estudios Científicos's from year 2014 and 1015 to map bed elevation and ice thickness in great detail. We perform a 3-D inversion of the gravity data constrained by radar-derived thickness and fjord bathymetry to infer bed elevation at 500-m spacing, with a precision of about 60 m. We detect deep glacial valleys with ice thickness exceeding 1,400 m and sectors below sea level on the western branch of Glaciar Pio XI, Occidental, between San Rafael and Colonia, and near Fitz Roy. We calculate an ice volume of 4,756 ± 923 cubic kilometers for Northern Patagonia Icefield and Southern Patagonia Icefield, or 40 times the volume of glaciers in the European Alps.

We perform a thr..., , , , # Ice thickness and bed elevation of the Northern and Southern Patagonian Icefields

Dataset DOI: [10.7280/D11Q17](10.7280/D11Q17)

## Description of the data and file structure

### Repository Content:

1. GravBed_Patagonia_Millan_et_al_2019_v1.nc: Map of bed elevation in meters above mean seal level of the Patagonia Icefields. Projection: UTM 18 South. Resolution: 150 m. Data format: GeoTIFF. Data type: Float32. NoData value: -9999.
2. Bed_WISE_20170726_Quality0_utm18s: ESRI shape file of bed elevation in meters below sea level from the WISE radar with quality 0. Data format: ESRI shapefile format; ; Coordinate Reference System: EPSG:32718 WGS 84 UTM 18S
3. Bed_WISE_20170726_Quality1_utm18s: ESRI shape file of bed elevation in meters below sea level from the WISE radar with quality 1. Data format: ESRI shapefile format; ; Coordinate Reference System: EPSG:32718 WGS 84 UTM 18S
4. Bed_WISE_20170726_Quality2_utm18s: ESRI shape file of bed elevation in meters below sea level from the WISE...