HYPOX 1 campaign
Abstract
The design of the benthic observatory GMM that was deployed in Katakolo Bay detects dissolved gases (oxygen, methane, sulfide) with commercially
available sensors and additionally records key physicochemical factors
(temperature, pressure, conductivity). The GMM observatory successfully
performed a long term (22 Sep. to 31 Dec. 2010) monitoring of oxygen in
a methane seepage site.
Purpose
The main objective of the work was to investigate characteristics and temporal evolution of hypoxia occurrence and the role of the respective
drivers of oxygen depletion (geographic and oceanographic conditions,
anthropogenic forcing, and gas seepage). To investigate the role of gas
seepage as a driver of oxygen depletion in more detail, the benthic
observatory GMM (Gas Monitoring Module) was deployed for four months in
Katakolo Bay.
