Hypoxia Hotspots in the Mississippi Bight

Abstract

Foraminiferal proxies of hypoxia indicate apparent low oxygen to hypoxic conditions in several hotspots in the Mississippi Bight. The foraminiferal hypoxia proxies, the Ammonia to Ephidium (A/E) index and the Pseudononion- Epistominella- Bullimella (PEB) index were tabulated from three sets of core tops collected in 1951-1956. Additionally, the oxygenation history of a site near the Balize delta was evaluated over the past one hundred years based on ArE and PEB indices and size distributions of pyrite framboids in a gravity core dated by 210Pb geochronology.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2006
Accession Number
ADA464019

Entities

People

  • Charlotte A. Brunner
  • Jennifer M. Beall
  • Samuel J. Bentley
  • Yoko Furukawa

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Barrier Islands
  • Bottom Waters
  • Chemistry
  • Continental Shelves
  • Drainage Basins
  • Environment
  • Environmental Protection
  • Geology
  • Marine Chemistry
  • Marine Geology
  • Materials
  • Measurement
  • Military Research
  • Oceanography
  • Oceans
  • Seabed
  • Sedimentation

Readers

  • Geotechnical Engineering.
  • Oceanography.
  • Spectroscopy.