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| 3.Rock Deformation — Feedback Processes in Rock Deformation |
| Dates | 19 Aou 2012 → 24 Aou 2012 | [ID=455975]  |
| Lieu | Andover, NH, États-Unis |
| Organisateur | Gordon Research Conferences |
| Résumé | Feedback processes are vitally important in controlling the rates and mechanisms of rock deformation. Positive feedbacks lead to accelerating rates, and commonly to spatial focusing. Localization and acceleration of creep is often associated with stress and/or strain rate dependent grain size reduction, frictional heating, or viscous shear heating. The presence of melt may help to localize and accelerate deformation, and in turn deformation may help to localize melt transport. Volume changes during retrograde metamorphic reactions may, under some circumstances, lead to fractures that maintain or increase permeability and reactive surface area, which in turn accelerates reaction rates. Hydraulic fracture often triggers a widening cascade of frictional failures on adjacent fracture systems. Feedbacks that form or reactivate closely-spaced fractures in the upper crust have relevance for, e.g., geological storage of CO2, enhanced geothermal power systems, and shale gas extraction. Clustering of earthquakes involves feedbacks in stress distribution on different faults, or segments of fault zones, that focus deformation in both time and space. Negative feedbacks can modulate or prevent accelerating strain. Gravitational instabilities, such as "delamination", "relamination", and diapirism, are affected by both positive and negative feedbacks when material undergoes phase transformations driven by changing pressure and temperature. Changes in pore pressure due to metamorphic reactions and/or shear heating can modulate earthquake behavior. There is increasing understanding of the mechanisms that limit earthquake rupture zones, and cause slow slip rather than seismic events. Crystallization in pore space can randomize previously focused fluid flow, reduce permeability, and bring metamorphic reactions to a halt. All of these feedbacks are related in a rich interplay of geodynamic processes. |
| Page web | http://www.grc.org/programs.aspx?year=2012&program=rockdef |
| Sujets apparentés | Minéralogie |
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| 4.World Congress on Earth Science & Climate Change |
| Dates | 21 Aou 2012 → 22 Aou 2012 | [ID=453909] |
| Lieu | Chicago, États-Unis |
| Page web | http://www.omicsonline.org/earthscience2012/ |
| Sujets apparentés | Météorologie et les changements climatiques |
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| 5.2012 Geological Society of America (GSA) Annual Meeting |
| Dates | 04 Nov 2012 → 07 Nov 2012 | [ID=433796] |
| Lieu | Charlotte, North Carolina, États-Unis |
| Page web | http://www.geosociety.org/meetings/2012/ |
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| 6.2012 AGU Fall Meeting |
| Dates | 10 Dec 2012 → 14 Dec 2012 | [ID=318247] |
| Lieu | San Francisco, Calif., États-Unis |
| Organisateur | American Geophysical Union |
| Résumé | The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting the Earth, the planets, and their environments in space. |
| Page web | http://www.agu.org/meetings/ |
| Contact | AGU Meetings Department 2000 Florida Avenue, NW Washington D.C. U.S.A. 20009; Tél.: (+1-202-777-7333); Email.: meetinginfo@agu.org |
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| 7.American Geophysical Union — AGU 2012 Fall Meeting |
| Dates | 14 Dec 2012 → 18 Dec 2012 | [ID=134747] |
| Lieu | San Francisco, California, États-Unis |
| Organisateur | American Geophysical Union (AGU) |
| Résumé | The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting the Earth, the planets, and their environments in space. |
| Page web | http://www.agu.org/ |
| Contact | AGU Meetings Department 2000 Florida Avenue, NW Washington DC USA 20009; Tél.: (202-777-7333); Email.: meetinginfo@agu.org |
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| 8.2013 AGU Fall Meeting |
| Dates | 09 Dec 2013 → 13 Dec 2013 | [ID=318246] |
| Lieu | San Francisco, Calif., États-Unis |
| Organisateur | American Geophysical Union |
| Résumé | The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting the Earth, the planets, and their environments in space. |
| Page web | http://www.agu.org/meetings/ |
| Contact | AGU Meetings Department 2000 Florida Avenue, NW Washington D.C. U.S.A. 20009; Tél.: (+1-202-777-7333) |
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| 9.2013 AGU Fall Meeting |
| Dates | 15 Dec 2013 → 19 Dec 2013 | [ID=190755] |
| Lieu | San Francisco, Calif., États-Unis |
| Résumé | The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting the Earth, the planets, and their environments in space. |
| Page web | http://www.agu.org/meetings.shtml |
| Contact | AGU Meetings Department 2000 Florida Avenue, NW Washington D.C. U.S.A. 20009; Tél.: (+1-202-777-7333) |
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| 10.2014 AGU Fall Meeting |
| Dates | 15 Dec 2014 → 19 Dec 2014 | [ID=190776] |
| Lieu | San Francisco, Calif., États-Unis |
| Résumé | The Fall Meeting provides an opportunity for researchers, teachers, students, and consultants to present and review the latest issues affecting the Earth, the planets, and their environments in space. |
| Page web | http://www.agu.org/meetings.shtml |
| Contact | AGU Meetings Department 2000 Florida Avenue, NW Washington D.C. U.S.A. 20009; Tél.: (+1-202-777-7333) |
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