Gulf of Mexico Water and Sediment Chemistry from R/V Endeavor Cruise EN527

Twenty-seven CTD casts and eleven multiple corer drops characterize the physical and chemical properties of the water column and sediment at the ECOGIG seep and other sites in the northern Gulf of Mexico. The dataset includes binned profiles, bottle files, and measurements of salinity, pH, dissolved nutrients, gases, and particulate carbon and nitrogen. Data was collected by the National Oceanic and Atmospheric Administration during the R/V Endeavor cruise EN527 from June 20 to July 3, 2013.

Use Cases

• Analyzing relationships between water column conductivity, density, and dissolved methane concentrations near seep sites.
• Modeling particulate organic carbon (POC) and total particulate nitrogen (TPN) distribution relative to depth and sediment core samples.
• Investigating sulfate reduction and methane oxidation processes using dissolved phosphate and nutrient ratio data.
• Correlating beam attenuation measurements with total particulate carbon (TPC) to assess water column turbidity and particle loads.

Strengths

• Dataset includes a defined set of 27 CTD casts and 11 sediment corer drops, providing structured sampling.
• Measures a wide range of chemical properties including dissolved gases, nutrients, and multiple forms of particulate carbon and nitrogen.
• Collected during a dedicated research cruise (R/V Endeavor EN527) focused on characterizing seep sites.

Limitations

• Exact column names, row counts, and file sizes are not provided by any source, limiting precise technical assessment.
• Sources conflict on the last updated date: datagov lists 2026-04-01 (likely a metadata refresh), while nasa_earthdata lists the collection end date of 2013-07-03.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Data collected using a CTD-rosette system and multiple corers aboard the R/V Endeavor.

Time Range

2013-06-20 to 2013-07-03

Freshness

2026-04-01 15:32:02.858870

Geography

Northern Gulf of Mexico, including the ECOGIG seep study sites.