Blöthe, Jan Henrik; Falaschi, Daniel; Vivero, Sebastián; Tadono, Takeo: Rock glacier surface velocities for Valley Calchaquíes region, Salta Province, Argentina [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971939 (dataset in review)
Abstract:
For the Valles Calchaquíes region, Northwestern Argentina, we derived rock glacier surface velocities (in unit m/a) from multi-temporal aerial and satellite imagery using a feature tracking approch. The data covers three epochs (EPs), EP1 from 1968 to 2009, EP2 from 2009/2010 to 2020, EP3 from 2020 to 2023. Given the variable availablility of aerial and satellite images, the spatial coverage is not the same for all three EPs. The data set provided here gives surface velocities that exceed the limit of detection of our analysis for rock glacier polygons as mapped by the Argentinian Glacier Inventory that have a minimum area of 0.02 km².
Supplement to:
Blöthe, Jan Henrik; Falaschi, Daniel; Vivero, Sebastián; Tadono, Takeo (in review): Rock glacier kinematics in the Valles Calchaquíes region, Northwestern Argentina, from multi-temporal aerial and satellite imagery. Permafrost and Periglacial Processes
Coverage:
Median Latitude: -24.700295 * Median Longitude: -66.251007 * South-bound Latitude: -25.044900 * West-bound Longitude: -66.408400 * North-bound Latitude: -24.409100 * East-bound Longitude: -66.083600
Minimum ELEVATION: 4384 m a.s.l. * Maximum ELEVATION: 5644 m a.s.l.
Event(s):
G660836O246090S_192 * Latitude: -24.609000 * Longitude: -66.083600 * Location: Calchaqui Valley, northwestern Argentina * Method/Device: Satellite imagery (SATI)
Comment:
Used rock glacier outlines as published by the Inventario Nacional de Glaciares of Argentina (https://www.glaciaresargentinos.gob.ar/). Polygon data can be downloaded there.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Blöthe, Jan Henrik | |||
| 2 | Latitude of event | Latitude | Blöthe, Jan Henrik | |||
| 3 | Longitude of event | Longitude | Blöthe, Jan Henrik | |||
| 4 | Identification | ID | Blöthe, Jan Henrik | ID assigned to rock glacier for this study | ||
| 5 | Identification | ID | Blöthe, Jan Henrik | ID assigned for rock glacier by the National Glacier Inventory of Argentina (use this to link table to inventory polygons) | ||
| 6 | Identification | ID | Blöthe, Jan Henrik | Focus area of study (see publication for details) | ||
| 7 | Area | Area | km2 | Blöthe, Jan Henrik | ||
| 8 | ELEVATION | Elevation | m a.s.l. | Blöthe, Jan Henrik | Geocode – Median elevation | |
| 9 | Rock glacier surface velocity | Rock gl surf vel | m/a | Blöthe, Jan Henrik | Satellite imagery (SATI) | Limit of detection of EP1 [m/a] (empty cells = not covered in EP1; see publication for details) |
| 10 | Rock glacier surface velocity | Rock gl surf vel | m/a | Blöthe, Jan Henrik | Satellite imagery (SATI) | Limit of detection of EP2 [m/a] (see publication for details) |
| 11 | Rock glacier surface velocity | Rock gl surf vel | m/a | Blöthe, Jan Henrik | Satellite imagery (SATI) | Limit of detection of EP3 [m/a] (see publication for details) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1085 data points