Data · collection
Net and Gross Oxygen Production Measured during the JGOFS Equatorial Pacific Process Study
Listed in NASA Earthdata CMR
The Equatorial Pacific Process Study (EQPAC) was conducted along 140 deg W longitude during 1992.
Description
Four cruises took place: February 3 - March 9, March 19 - April 15, August 5 - September 18, and September 24 - October 21. A fifth benthic cruise and sediment trap legs were added.
During the first cruise (TT007), 15 stations were occupied along 140 deg W longitude from 12 deg N latitude to 12 deg S latitude. During the second cruise (TT008), data were collected at 8 stations along 140 deg W longitude from 9 deg S latitude to 9 deg N latitude. During the third cruise (TT011), data were collected at 15 stations along 140 deg W from 12 deg N latitude to 12 deg S latitude.
Read the rest (3 more)
During the fourth cruise (TT012), data were collected at 5 stations along 140 deg W longitude from 17 deg S latitude to the equator. To measure oxygen production, water samples were collected with the trace metal (TM) rosette water sampler using clean techniques. Samples were incubated in 100 ml quartz bottles at ambient temperature and irradiance for 24 hours.
Net oxygen production was determined from the change in the oxygen concentration after 24 hours. Gross oxygen production was determined by measuring the rate at which oxygen-18 labeled oxygen (O) in water (H2O) was transfered into oxygen-18 labeled O2. The oxygen data were only collected during the second (TT008) and fourth (TT012) cruises.
The data is public domain and can be retrieved on-line at "usjgofs.whoi.edu/jg/dir/jgofs/"
Links
Get the data
- Access US JGOFS data usjgofs.whoi.edu/jg/dir/jgofs ↗
download · from NASA CMR
Documentation and papers
- US JGOFS Home Page usjgofs.whoi.edu ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214605573-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214605573-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Oxygen · OXYGEN ANALYZERS · SHIPS · WATER BOTTLES
- Inferred from text
- Oceanography 68%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214605573-SCIOPS | 7 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3708 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (68%) |
| concepts[instrument].gcmd_instrument:oxygen-analyzers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:water-bottles | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-chemistry/oxygen | 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 |