Future Opportunities in Scientific Ocean Drilling: Natural Hazards

Ocean Drilling Program Leg 204 Scientific Prospectus Drilling Gas Hydrates on Hydrate Ridge, Cascadia

During Ocean Drilling Program (ODP) Leg 204, we will drill a transect of sites through the gas hydrate stability zone on the southern part of Hydrate Ridge on the Cascadia accretionary margin offshore Oregon. Massive hydrates are present at the seafloor there, and high-resolution threedimensional seismic data indicate a complicated subsurface plumbing system. The transect will cover two distinc...

Addressing Geohazards Through Ocean Drilling

Natural geohazards, such as earthquakes, volcanic eruptions, landslides, and volcanic collapse, are of immediate societal concern. In an oceanic setting (Fig. 1), all are capable of generating tsunami that threaten coastal zones at distances of many thousands of kilometers. This power and its effects were forcefully shown by the giant earthquake (� w 9.2) and tsunami of 26 December 2004 off t...

Ocean Observing Systems: recent progress, opportunities and future plans

Many methods have been used to undertake observing system design and assessment studies for oceanic and atmospheric applications most of which borrow tools from data assimilation [14, 4, 9]. To date, only a limited number of model-based studies have been undertaken to specifically assess the design and assessment of the Integrated Marine Observing System (IMOS) [11, 8]. These studies have used ...

Drilling Program: SHIPBOARD SCIENTIFIC PARTY

Ocean Drilling Program (ODP) Leg 199, “The Paleogene Equatorial Transect” (Sites 1215 through 1222), was designed to study the evolution of the equatorial Pacific current and wind system as the Earth went from maximum Cenozoic warmth to initial Antarctic glaciations. The drilling program was primarily devoted to a transect along 56to 57-Ma crust, old enough to capture the Paleocene/ Eocene boun...

Drilling Program: SHIPBOARD SCIENTIFIC PARTY