Project Details
Projekt
SFB 574: Volatiles and Fluids in Subduction Zones: Climate Feedback and the Causes of Natural Disasters
Subject Area
Geosciences
Term
from 2001 to 2012
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 5484524
Objectives:
-- Is there a detectable and quantifiable relationship between tectonic movements, tidal and other forcings, on one hand, and dewatering rates and fluid-venting, as well as volcanic activities, on the other?
-- How do subduction velocity, plate composition, and variable temperature and pressure regimes affect the depth of maximum devolatilization and earthquakes?
-- How much of the return flux to the ocean and the atmosphere occurs through vent sites, mud diapirism, and volcanoes?
-- What are the processes controlling the formation and decomposition of gas hydrates and how is methane transport affected by mud diapirism? Do they trigger large slumps, how often do these occur and how much mass is moved by individual slumps?
-- How do fluid and gas fluxes at subduction zones affect benthic communities, water column chemistry, and sea-air exchange of green house gases and what role is played by biologically mediated transformation of volatiles in the ocean?
-- What quantities of different volatile phases are expelled from volcanoes into the atmosphere, from which sources do they originate, and what processes control their composition?
-- What is the role of recycling and element fractionation at subduction zones on long-term climate development and on the geochemical evolution of the atmosphere, seawater, and sediments?
-- Is there a detectable and quantifiable relationship between tectonic movements, tidal and other forcings, on one hand, and dewatering rates and fluid-venting, as well as volcanic activities, on the other?
-- How do subduction velocity, plate composition, and variable temperature and pressure regimes affect the depth of maximum devolatilization and earthquakes?
-- How much of the return flux to the ocean and the atmosphere occurs through vent sites, mud diapirism, and volcanoes?
-- What are the processes controlling the formation and decomposition of gas hydrates and how is methane transport affected by mud diapirism? Do they trigger large slumps, how often do these occur and how much mass is moved by individual slumps?
-- How do fluid and gas fluxes at subduction zones affect benthic communities, water column chemistry, and sea-air exchange of green house gases and what role is played by biologically mediated transformation of volatiles in the ocean?
-- What quantities of different volatile phases are expelled from volcanoes into the atmosphere, from which sources do they originate, and what processes control their composition?
-- What is the role of recycling and element fractionation at subduction zones on long-term climate development and on the geochemical evolution of the atmosphere, seawater, and sediments?
DFG Programme
Collaborative Research Centres
International Connection
USA
Completed projects
- A01 - Tectonics, fluid flow and slope stability revealed with multiscale mapping methods (Project Heads Behrmann, Jan-Hinrich ; Weinrebe, Wilhelm )
- A02 - Geophysical search for links between earthquake and volcano hazard in south-central Chile (Project Heads Flüh, Ernst R. ; Götze, Hans-Jürgen ; Hackney, Ron ; Rabbel, Wolfgang )
- A05 - Serpentinization in subduction zones (Project Heads Flüh, Ernst R. ; Grevemeyer, Ingo ; Rabbel, Wolfgang )
- A06 - A synoptic digital model of Central America and adjacent oceanic areas (Project Heads Goltz, Christian ; Götze, Hans-Jürgen ; Schmidt, Sabine )
- B02 - Mechanisms and budgets of mud diapirism and mass wasting (Project Heads Brückmann, Warner ; Reston, Timothy John )
- B03 - Sea floor volatile emissions and turnover: Mechanisms and budgets (Project Heads Linke, Peter ; Treude, Tina )
- B05 - Diagenetic processes in forearc sediments and volatile input to subduction zone systems: Accumulation, transport and release of volatiles (Project Heads Hansteen, Thor Henrik ; Hensen, Christian )
- B06 - Authigenic carbonates as long term archive for fluid venting (Project Heads Eisenhauer, Anton ; Garbe-Schönberg, Carl-Dieter ; Liebetrau, Volker )
- C01 - Tracking down gain and loss of volatile and fluid-mobile elements in subductions zones: A combined field-based and experimental approach (Project Heads Herms, Petra ; Holzheid, Astrid ; Schenk, Volker )
- C02 - Composition and dynamics of subduction-related magmatic systems: Magma genesis and temporal and spatial variations in volatile fluxes (Project Heads van den Bogaard, Paul ; Garbe-Schönberg, Carl-Dieter ; Hoernle, Kaj )
- C03 - Quiescent volatile emissions of subduction zone volcanoes: Global impact on atmospherie chemistry and climate (Project Heads Hansteen, Thor Henrik ; Sachs, Peter Michael )
- C04 - Crustal controls on the volatile inventory of evolving arc magmas, and implications for volcanic hazards (Project Heads Freundt, Armin ; Hansteen, Thor Henrik )
- C05 - Modelling climate effects/feedbacks and subduction processes (Project Heads Krüger, Kirstin ; Latif, Mojib ; Rüpke, Lars Helmuth )
- N01 - Imanging the fluid distribution in the Central American subduction system unsing combined marine electromagnetic methods and joint inversion (Project Head Jegen-Kulcsar, Marion )
- Z01 - Central services and logistics (Project Heads Freundt, Armin ; Hoernle, Kaj )
- Z2 - Database Management (Project Heads Bialas, Jörg ; Brückmann, Warner ; Flüh, Ernst R. ; Hort, Matthias )
- ÖA - A Joint Outreach Program of SFB 754 & 574 (Project Heads Dengg, Joachim ; Freundt, Armin )
Applicant Institution
Christian-Albrechts-Universität zu Kiel
Participating Institution
GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel; University of Southern California
Department of Biological Sciences
Marine and Environmental Biology Section
Department of Biological Sciences
Marine and Environmental Biology Section
Spokespersons
Professor Dr. Kaj Hoernle; Professor Dr. Timothy John Reston, until 5/2007
