The German-Indonesian Tsunami Early Warning System (GITEWS) aims at reducing the risks posed by events such as the 26 December 2004 Indian Ocean tsunami. To minimize the lead time for tsunami alerts, to avoid false alarms, and to accurately predict tsunami wave heights, realtime observations of ocean bottom pressure from the deep ocean are required. As part of the GITEWS infrastructure, the par...

Climate change and unstable earth’s crust are effecting the overall environment. Oceans are one environmental component that has been shown to be heavily affected by those factors. One example would be the melting of the North Pole, which is affecting the temperature of the overall ocean such as the Atlantic Ocean. Another example would be the recent instability of the earth’s crust in the ocea...

[1] Galileo spacecraft data obtained from Jupiter’s ice-covered satellite Europa suggest the existence of a subsurface water ocean. The formation of this ocean is a direct consequence of early igneous and hydrothermal processes that may have facilitated oxidation through H2 and CH4 escape. These processes could have led to a moderately alkaline sulfate-carbonate ocean and a moderately oxidized ...

The paper presents signal processing and control algorithms that enable autonomous tracking of the boundaries between distinct benthic regions by an AUV equipped of a profiler sonar. A novel sonar classification algorithm is presented, which uses the signature of the ocean floor in the incoming profilers to discriminate between distinct materials. By exploiting sonar scans of the region below t...

[1] Dissolution of fossil fuel CO2 in seawater results in decreasing carbonate ion concentration and lowering of seawater pH with likely negative impacts for many marine organisms. We project detectable changes in carbonate dissolution and evaluate their potential to mitigate atmospheric CO2 and ocean acidification with a global biogeochemistry model HAMOCC forced by different CO2 emission scen...

This work presents a new high-resolution multibeam bathymetric map of segment active deep sea-floor spreading in the Atlantic Ocean, northern Mid-Atlantic Ridge (MAR) at 45–46o N. New high...