Kidyaeva, Vera; Iudina, Viktoriia; Averina, Alena; Pavlyukevich, Ekaterina; Gubanov, Afanasy: Extra glacial lake inventory of the Caucasus, 2025: geographic identification and morphometric characteristic [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993979 (dataset in review)
Abstract:
This dataset presents a comprehensive tabular inventory of extraglacial lakes in the Caucasus region, compiled from remote sensing data acquired during the 2025 ablation season. The tabular format of this inventory facilitates rapid analysis and seamless integration with GIS and statistical software. All extraglacial lakes were mapped using satellite imagery (Sentinel-2) acquired during the 2025 ablation season. Lake boundaries were delineated manually to ensure accuracy, particularly for complex lake geometries. Morphometric parameters were calculated from satellite data and a digital elevation model (DEM). The inventory includes comprehensive morphometric characteristics for each extraglacial lake: geographic identifiers (country, region, river basin), coordinates, elevation, area, perimeter, volume, lake typology.
Supplement to:
Kidyaeva, Vera; Iudina, Viktoriia; Averina, Alena; Pavlyukevich, Ekaterina (submitted): Glacial lake inventory and GLOF hazard assessment in Caucasus region. Earth System Science Data
Funding:
Russian Science Foundation, grant/award no. 25-77-10049: Outburst hazard assessment of mountain glacial lakes of the Central Caucasus under climate change using modelling and machine learning methods
Coverage:
Median Latitude: 43.172150 * Median Longitude: 42.285263 * South-bound Latitude: 41.166355 * West-bound Longitude: 39.872670 * North-bound Latitude: 44.059252 * East-bound Longitude: 47.988603
Date/Time Start: 2025-07-30T08:06:00 * Date/Time End: 2025-10-15T08:06:00
Minimum ORDINAL NUMBER: 1 * Maximum ORDINAL NUMBER: 973
Event(s):
Comment:
The dataset covers:
* Geographic identification: unique geographic coordinates (latitude/longitude in WGS84 decimal degrees, and auxiliary UTM coordinates), elevation, lake name, country, region, and river basin.
* Morphometric characteristics: lake area (m²), lake perimeter (m), and lake volume (m³).
All lakes were mapped using satellite imagery (Sentinel-2) acquired during the 2025 ablation season. Lake boundaries were delineated manually to ensure accuracy, particularly for complex lake geometries and ice-contacting margins.
The dataset is intended to support research on glacier-lake interactions, GLOF hazard assessment, and water resource management in the Caucasus. It provides a baseline for monitoring future lake changes and contributes to regional disaster risk reduction efforts.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | ORDINAL NUMBER | Ord No | Pavlyukevich, Ekaterina | Geocode – Unique identifier of the lake. | ||
| 2 | LATITUDE | Latitude | Pavlyukevich, Ekaterina | Geocode | ||
| 3 | LONGITUDE | Longitude | Pavlyukevich, Ekaterina | Geocode | ||
| 4 | UTM Easting, Universal Transverse Mercator | UTM east | m | Pavlyukevich, Ekaterina | UTM east: number where the lake is located. | |
| 5 | UTM Northing, Universal Transverse Mercator | UTM north | m | Pavlyukevich, Ekaterina | UTM north: number where the lake is located. | |
| 6 | UTM Zone, Universal Transverse Mercator | UTM Zone | Pavlyukevich, Ekaterina | UTM zone: number where the lake is located. | ||
| 7 | Lake | Lake | Pavlyukevich, Ekaterina | Geographic name of the lake, if available. | ||
| 8 | Country | Country | Pavlyukevich, Ekaterina | Country where the lake is located. | ||
| 9 | Region, political | Reg political | Pavlyukevich, Ekaterina | Region or administrative unit. | ||
| 10 | Type | Type | Pavlyukevich, Ekaterina | Type based on position relative to glacier: extraglacial (located outside the area of present-day glaciation; beyond the direct influence of glacial processes). | ||
| 11 | Lake, perimeter | Lake perim | m | Pavlyukevich, Ekaterina | High-resolution multispectral imager, European Space Agency, Sentinel-2 | Length of the lake shoreline (perimeter) based on 2025 data. |
| 12 | Lake surface area | Lake area | m2 | Pavlyukevich, Ekaterina | High-resolution multispectral imager, European Space Agency, Sentinel-2 | Surface area of the lake based on 2025 data. |
| 13 | Lake volume, below depth | Lake vol below depth | m3 | Pavlyukevich, Ekaterina | Calculated | Water volume calculated using empirical formula: V = 0.58 × Area^1.62 (derived from bathymetric measurements of glacial lakes in the Caucasus). |
| 14 | Global navigation satellite system | GNSS | Pavlyukevich, Ekaterina | Name of the satellite that data were used for lake mapping and parameter measurement. | ||
| 15 | DATE/TIME | Date/Time | Pavlyukevich, Ekaterina | Geocode – Date of the survey |
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:
9732 data points
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