Miller, Ian: Beach Profile Data for the Elwha River Delta, 2019-01-18 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.978024 (dataset in review), In: Miller, Ian: Beach Profile Data for the Elwha River Delta, 2018-2024 [dataset publication series]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.977774 (dataset in review)
Abstract:
Shoreline topography data were collected using GNSS survey methods, with a differential GPS operating in Real Time Kinematic (RTK) mode. Data were typically collected with an AshTech ProMark 200 RTK-DGPS system connected to the Washington State Reference Network. Survey data are referenced in the horizontal reference frame to NAD83(2011), and vertical data for surveys in 2012 and 2013 are referenced to NAVD88(Geoid09) for all survey data collected before December 2016, NAVD88(Geoid12) for all survey data collected between December 2012 and May 2020, and NAVD88(Geoid18) for all survey data collected subsequently. No conversions were applied to these data to account for variations in horizontal or vertical coordinate system adjustments through time, but an error analysis suggests a standard deviation for the elevation data of between 0.03 and 0.05 m across the entire sampling period (2011-2024). All survey data were collected with the GNSS system mounted on a 2.05 m rover pole, held level as a transect line was traced in a cross-shore orientation on the beach. The associated text files include the horizontal (HRMS) and vertical (VRMS) root-mean-square errors estimated by the GNSS system, as well as the RTK-DGPS status reported by the GNSS system at the time each point was collected. Times are referenced to local Pacific time (either PST or PDT).
Related to:
Miller, Ian (2019): Beach Profile Data for the Elwha River Delta, 2011-2018 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.901486
Coverage:
Median Latitude: 49.566216 * Median Longitude: -125.931484 * South-bound Latitude: 49.558756 * West-bound Longitude: -125.940197 * North-bound Latitude: 49.578628 * East-bound Longitude: -125.928074
Date/Time Start: 2019-01-18T16:49:12 * Date/Time End: 2019-01-18T18:48:53
Minimum ELEVATION: -0.24 m a.s.l. * Maximum ELEVATION: 4.97 m a.s.l.
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | LATITUDE | Latitude | Miller, Ian | Geocode | ||
| 2 | LONGITUDE | Longitude | Miller, Ian | Geocode | ||
| 3 | ELEVATION | Elevation | m a.s.l. | Miller, Ian | Geocode | |
| 4 | DATE/TIME | Date/Time | Miller, Ian | Geocode | ||
| 5 | Horizontal root mean square error | HRMS | m | Miller, Ian | ||
| 6 | Vertical root mean square error | VRMS | m | Miller, Ian | ||
| 7 | Status | Status | Miller, Ian | GPS | ||
| 8 | Description | Description | Miller, Ian |
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:
3036 data points
Download Data (login required; moratorium until 2026-03-06)
View dataset as HTML (shows only first 2000 rows)