Geophysical Data, Skeiðarársandur, Iceland 2022 (NERC Grant NE/X002020/1)
type: Dataset
description: Three datasets, ground-penetrating radar, side-scan sonar and sub-bottom profile data (CHIRP), were collected in April and June 2022 from the proximal Skeiðarársandur area (~63.9 N, 17.2 E) and Skeiðarársandur coastline (63.7 N, 17.5 E) that lie at the mouth of Gígjukvísl. Ground-penetrating radar (GPR) data acquired for this project on 15th and 18th April 2022 provide new insights into the sediment architecture of differing depositional environments at Skeiðarársandur, southeast Iceland, including: (i) a recently emplaced jökulhlaup deposit in a large ice-proximal depression, and (ii) the coastal environment of a vast glaciofluvial braidplain. Radar data collected in the ice-proximal depression utilised a 250 MHz Utsi GroundVue (GV) 3, a shielded single-channel bistatic radar system suited to near surface (0-10 m depth). Approximately 30 km of 250 MHz GPR data were collected parallel and perpendicular to the jökulhlaup flow direction. The GPR data from the coastal regions of Skeiðarársandur were collected using a 100 MHz Utsi GV7. The 100 MHz Utsi GV7 is a ruggedised and unshielded radar system with a centre-frequency of 100 MHz and an emitted bandwidth of ~1-160 MHz. The radar system has a maximum time-window of 800 ns and each stacked radar trace is comprised of 256 samples (i.e. one sample every 3.125 ns). Approximately 12 km of 100 MHz radar data were collected at the Skeiðarársandur coastline. File format for the raw data includes .dat, .gps, .gpt and .hdr. Positional (Lat, Lon) data were acquired using a handheld GPS connected via USB to the ruggedised laptop (100 MHz Utsi GV7) or connected directly to GPR control unit (250 MHz Utsi GV3). All GPS data were recorded directly in the Utsi GroundVue software by logging an NMEA string concurrent with radar trace samples (i.e. an XY position for each individual sampled radar trace). Side scan sonar, CHIRP and single-beam echosounding data were collected within a large proglacial lake fronting Skeiðarárjökull (63.5 …
keyword: Echosounder
keyword: Geophysics
keyword: Ground penetrating radar
keyword: NERC_DDC
keyword: Side scan sonar
issued: 2025-09-16T16:22:11.285231
modified: 2026-08-06T20:15:48.713331
spatial: Location
  geometry: {"type": "Polygon", "coordinates": [[[-17.2000, 63.7000], [-17.5000, 63.7000], [-17.5000, 63.9000], [-17.2000, 63.9000], [-17.2000, 63.7000]]]}

British Geological Survey (BGS)
type: Organization

Data
type: Distribution
description: Resource locator
access URL: https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item183117
issued: 2026-08-06T20:15:48.752825
modified: 2026-08-06T20:15:48.716587