Data · collection
Geophysical, Sedimentological, and Photographic Data from the John Day Reservoir, Washington and Oregon
Listed in NASA Earthdata CMR
Recently, concerns about declining stocks of endangered anadromous salmonids in the Columbia River basin raised the issue of restoration of riverine functions in this and other Columbia and Snake River reservoirs (ISG, 2000; Dauble and others, 2003).
Description
One option for restoration of riverine functions includes lowering water levels within selected reservoirs such as the John Day Reservoir. Questions about how much sediment has been trapped by this dam warranted a detailed study of the floor of the reservoir to assess changes that had occurred since impoundment.
High-resolution geophysical mapping techniques were employed to provide, to our knowledge, the first detailed view of the floor of the reservoir since its formation. This geophysical "road map" in concert with bottom video images, some sediment samples, and historical data collected prior to creation of the reservoir were incorporated into a GIS. The subsequent text summarizes the techniques used in this study.
Read the rest (1 more)
It also provides a preliminary analysis of the results and a background for the GIS that accompanies this report. [Summary provided by the USGS.]
Links
Get the data
- pubs.usgs.gov /of/2004/1014/htmldocs/metadata.htm ↗
Access to Geophysical, Sedimentological, and Photographic Data from the John Day Reservoir, Washington and Oregon.
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2231550514-CEOS_EXTRA.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2231550514-CEOS_EXTRA.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- CAMERAS · FIELD INVESTIGATION · FIELD SURVEYS · Lakes/Reservoirs · Not provided · Roads · Sedimentary Rocks · Sediments · Sediment Transport · Sediment Transport · Seismic Profile · SHIPS · SIDE-SCAN SONAR · Topographical Relief Maps · Topographic Effects · Visible Imagery · Watershed Characteristics
- Inferred from text
- Image 65% · Physical geography and environmental geoscience 70% · Text 75% · Video 75%
Provenance · 1 source records, 27 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2231550514-CEOS_EXTRA | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3709 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[instrument].gcmd_instrument:cameras | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:side-scan-sonar | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/infrastructure/transportation/roads | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/land-surface/geomorphic-landforms-processes/fluvial-processes/sediment-transport | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/land-surface/topography/terrain-elevation/topographical-relief-maps | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/land-surface/topography/topographic-effects | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/geomorphic-landforms-processes/fluvial-processes/sediment-transport | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/sedimentary-rocks | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/sediments | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/tectonics/earthquakes/seismic-profile | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/visible-wavelengths/visible-imagery | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/terrestrial-hydrosphere/surface-water/surface-water-features/lakes-reservoirs | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/terrestrial-hydrosphere/surface-water/watershed-characteristics | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[modality].local:modality:text | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:video | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:field-investigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ships | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |