Rolf, Marie; Grünberg, Inge; Boike, Julia (2024): GNSS measurements at Ny-Ålesund, Bayelva, and Kvadehuksletta, Svalbard (2023-07-22 - 2023-08-01) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.972710 (DOI registration in progress)
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Abstract:
This data product contains post-processed GNSS measurements from an Alfred Wegener Institute (AWI) expedition to Ny-Ålesund, Svalbard in summer 2023. We surveyed more than 900 satellite-based positions using a GNSS receiver at previous (2019) elevation measurement locations, bedrock outcrops, buildings, and control points by the Norwegian Mapping Authority Kartverket. Our measurements were located in Ny-Ålesund, the Bayelva area, and Kvadehuksletta. We post-processed our GNSS measurements based on data from the two long-term reference stations NYA1 and NYA2 and implemented a thorough quality control.
Inter-annual thaw subsidence is an important metric for monitoring permafrost. However, permafrost thaw subsidence is difficult to observe due to its slow yet extensive character. This data product is suitable for validating digital elevation models and observing long-term elevation changes in the periglacial area near Ny-Ålesund. Please note that a direct comparison to the data from our previous campaign (Lange et al., 2020) or other GNSS measurements requires a different post-processing with the same datum for each measurement date.
Keyword(s):
Supplement to:
Rolf, Marie; Grünberg, Inge; Hammar, Jennika; Brauchle, Jörg; Boike, Julia (in prep.): Widespread and long-term permafrost thaw subsidence on the Brøgger peninsula, Svalbard.
Related to:
Lange, Stephan; Cable, William L; Boike, Julia (2020): GNSS Measurements Ny Ålesund & Bayelva Svalbard 2019 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.913309
Documentation:
Rolf, Marie; Grünberg, Inge; Boike, Julia (2024): GNSS measurements at Ny-Ålesund, Bayelva, and Kvadehuksletta, Svalbard (2023/07/22 - 2023/08/01). GNSS2023_Documentation.pdf
Project(s):
Permafrost Research (AWI_Perma)
Coverage:
Latitude: 78.920900 * Longitude: 11.833100
Date/Time Start: 2023-07-22T15:30:00 * Date/Time End: 2023-08-01T14:41:00
Minimum Elevation: 25.0 m * Maximum Elevation: 25.0 m
Event(s):
Bayelva_GNSS_2023 (Bayelva_GNSS) * Latitude: 78.920900 * Longitude: 11.833100 * Elevation: 25.0 m * Location: Ny-Ålesund, Spitsbergen * Campaign: NO-Land_2023_Bayelva (Bayelva LTO AWIPEV) * Basis: AWIPEV * Method/Device: GNSS Receiver (GNSS)
Comment:
# Reference frame IGb14, base positions corrected for 2023-08-01
# Coordinates from the base with better post-processing quality (NYA1 or NYA2)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Increment number | Inc | # | Rolf, Marie | ||
| 2 | Identification | ID | Rolf, Marie | PointID | ||
| 3 | DATE/TIME | Date/Time | Rolf, Marie | Geocode – UTC | ||
| 4 | UTM Easting, Universal Transverse Mercator | UTM east | m | Rolf, Marie | Coordinates in m, UTM zone 33N | |
| 5 | UTM Northing, Universal Transverse Mercator | UTM north | m | Rolf, Marie | Coordinates in m, UTM zone 33N | |
| 6 | Height above ellipsoid | H-Ell | m | Rolf, Marie | ellipsoid height | |
| 7 | Comment | Comment | Rolf, Marie | |||
| 8 | Image, earth surface (water, ice, land) | IMAGE earth surf | Rolf, Marie | photo file | ||
| 9 | Image, earth surface (water, ice, land) | IMAGE earth surf | Rolf, Marie | additional photo file #1 | ||
| 10 | Image, earth surface (water, ice, land) | IMAGE earth surf | Rolf, Marie | additional photo file #2 | ||
| 11 | Image, earth surface (water, ice, land) | IMAGE earth surf | Rolf, Marie | additional photo file #3 | ||
| 12 | Quality code | Quality | Rolf, Marie | PointRole - Quality parameter of the Infinity software ("Phase"(cm accuracy) or "Code" (less accurate) if both bases agree, "mixed" if they differ) | ||
| 13 | Offset | Offset | m | Rolf, Marie | abs_dH - Absolute difference between the height value of NYA1 and NYA2 | |
| 14 | Best match | Best m | Rolf, Marie | Base station that was chosen for post-processing due to higher post-processing quality | ||
| 15 | Quality level | Qual level | Rolf, Marie | CQ3D - Quality parameter of the Infinity software, Quality in three dimensions | ||
| 16 | Quality flag | QF | Rolf, Marie | see reference(s) | QF_CQ3D - Quality flag based on quality parameter CQ3D | |
| 17 | Quality flag | QF | Rolf, Marie | see reference(s) | QF_dH - Quality flag based on Offset (abs_dH) | |
| 18 | Quality flag | QF | Rolf, Marie | see reference(s) | Overall quality flag based on QF_CQ3D and QF_dH |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
11911 data points
Download Data
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