| Abstract: | This paper presents the benthic foraminiferal census data, magnetic susceptibility measurements, vanadium and organic geochemistry (carbon isotope, sterols, and total organic carbon) data from the MRD05-04 gravity and box cores. The MRD05-04 cores were obtained from the Louisiana continental shelf in an on-going initiative to examine the geographic and temporal extent of hypoxia, low-oxygen bottom-water content, and geochemical transport. The development of low-oxygen bottom water conditions in coastal waters is dependent upon a new source of bio-available nutrients introduced into a well-stratified water column. A number of studies have concluded that the development of the current seasonal hypoxia (dissolved oxygen < 2 mg L-1) in subsurface waters of the northern Gulf of Mexico is related to increased transport of nutrients (primarily nitrogen, but possibly also phosphorous) by the Mississippi River. However, the development of earlier episodes of seasonal low-oxygen subsurface water on the Louisiana shelf may be related to Mississippi River discharge. |
| Genre: | USGS Numbered Series |
| ProdID: | 98413 |
| Citation Author: | Osterman, Lisa E.; Campbell, Pamela L.; Swarzenski, Peter W.; Ricardo, John P. |
| Citation Contributing Office: | U.S. Geological Survey |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | N |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | N |
| Citation Phsyical Description: | 18 p. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2007-1024 |
| Citation Search Results Text: | Biological, Physical and Chemical Data From Gulf of Mexico Gravity and Box Core MRD05-04; 2010; OFR; 2007-1024; Osterman, Lisa E.; Campbell, Pamela L.; Swarzenski, Peter W.; Ricardo, John P. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Biological, Physical and Chemical Data From Gulf of Mexico Gravity and Box Core MRD05-04; 2010; OFR; 2007-1024; Osterman, Lisa E.; Campbell, Pamela L.; Swarzenski, Peter W.; Ricardo, John P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/ofr_2007_1024.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2007/1024/ |
| Date Other: | Wed, 26 May 2010 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
