HR: 09:30h
AN: OS11B-06    [Abstracts]
TI: Numerical Simulations of Hypoxia on the Texas-Louisiana Continental Shelf
AU: * Hetland, R D
EM: hetland@tamu.edu
AF: Texas A&M University, 3146 TAMU, College Station, TX 77843-3146
AU: DiMarco, S F
EM: sdimarco@ocean.tamu.edu
AF: Texas A&M University, 3146 TAMU, College Station, TX 77843-3146
AB: Numerical simulations of the mechanisms controlling hypoxia on the Louisiana/Texas Continental Shelf are presented using two different biogeochemical models of benthic oxygen demand. The first model defines benthic oxygen demand as a simple function of local temperature and oxygen concentration based on measurements of benthic respiration. This simple model reproduces many of the salient features such as vertical structure, approximate spatial extent, and timing of hypoxia on the Louisiana/Texas shelf. A more complex model that includes nutrient inputs from the local rivers, water column production, and sinking detritus is used to examine the effects on carbon supply to the benthos.
DE: 4834 Hypoxic environments
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting