Please see below for sessions of interest to the GeoPRISMS community, taking place at the 2014 Fall AGU Meeting, December 15-19 in San Francisco. Note, AGU abstract submission deadline is August 6, 2014.
See http://fallmeeting.agu.org/2014/
1. ID: #1524 Physics of Subduction Earthquakes: From the Trench to the Transition zone
- ID: #2699 Processes, pathways, and properties along the subduction interface
- ID: #2614 Illuminating the factors that determine subduction megathrust fault slip style
- ID: #1856 Science and Societal Lessons from a Decade of Giant Megathrust Earthquakes
- ID: #2815 Advances in Sub-Aqueous Paleoseismology : New Insights into Earthquake Recurrence
- ID: #3034 Arcs from the Inside Out
- ID: #2987 Signal propagation and preservation: routing information from the geomorphic engine to the stratigraphic record
- ID: #2384 Drilling the Izu-Bonin-Mariana System: First Results and Related Studies
- ID: #3348 – Crustal construction processes from the Backarc-Arc to the Forearc
- ID: #2208 Marine Geohazards
- ID: #2326 Satellite Remote Sensing and Management of Natural Disasters
- ID: #3396 Collaborative Studies on Mantle Melting
- ID: #2004 Melt and Volatiles: Two Key Ingredients in a Mantle
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- ID: #1524 – Physics of Subduction Earthquakes: From the Trench to the Transition Zone
Dear Colleagues
We would like to bring to your attention our AGU session, Physics of subduction earthquakes: from the trench to the transition zone, that aims to gather studies on observation, analysis and simulations of the dynamic rupture processes along and near the place interface of subduction zones.
Session Description:
Subduction zones host great diversity in earthquake source processes, which poses a challenge as to accurately characterize the seismic hazard. Variations in properties such as fault geometry, temperature, normal stress, pore pressure, and composition may greatly contribute to seismic coupling and earthquake dynamics. To resolve these different controlling factors and mechanisms from teleseismic distances, we measure indicators of source dynamics, such as stress drop, rupture velocity, and radiation efficiency. We invite studies that provide new insight on source dynamics from earthquakes along-dip of the plate interface: shallow and tsunami(genic), megathrust, intermediate-depth, and deep earthquakes. Observations and simulations are both welcome.
Focus Group:
S – Seismology
Co-Sponsors:
T – Tectonophysics
Conveners:
Marine Denolle, Scripps Institute of Oceanography, University of California San Diego
Zhongwen Zhan, Scripps Institute of Oceanography, University of California San Diego
Invited Speakers:
Germán Prieto, Massachusetts Institute of Technology
Shuo Ma, San Diego State University
Thorne Lay, University of California Santa Cruz
Cliff Frohlich, Institute for Geophysics, University of Texas at Austin
Apologize for the multi postings,
Cheers,
Marine and Zhongwen
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session1524.html
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- ID: #2699 – Processes, pathways, and properties along the subduction interface
Dear colleagues,
Apologies for multiple postings.
We would like to draw your attention to a session at this Fall’s AGU meeting (December 15-19, 2014). The session is titled: “Processes, pathways, and properties along the subduction interface”
We welcome contributions from a variety of disciplines, including but not limited to petrology, geochemistry, structure geology, geophysics, and geochronology.
Session description:
Subduction-zone lithologies display a variety of evidences for processes along the “subduction interface,” the dynamic region between the slab and forearc (shallow) or mantle wedge (deep). Significant chemical (e.g. fluid-rock interaction) and physical (e.g. rheological) changes are undergone at this interface, involving progressive metamorphism, the release and transfer of volatiles, and geochemical cycling to the overriding plate. This session welcomes studies involved in understanding processes at the “subduction interface” that can be elucidated by the study of metamorphism, metamorphic geochemistry, and deformation. Approaches may include the study of the mobility of fluids and elements, rates/kinetics of processes, petrologic/thermal modeling, structural analysis, geophysical observations as related to metamorphism and fluid pressures/flow, and broadly, the study of exhumed terranes, from the forearc to the subarc.
Focus Group:
V – Volcanology, Geochemistry, and Petrology
Co-Sponsor:
MSA – Mineralogical Society of America
Conveners:
Besim Dragovic (Virginia Tech, USA)
Tatsuki Tsujimori (Okayama University—Misasa, Japan)
Alberto Vitale Brovarone (IMPMC, France)
Invited Speakers:
Gray Bebout (Lehigh University)
Thomas Lapen (University of Houston)
Samuel Angiboust (GFZ Potsdam)
Glenn Spinelli (New Mexcio Tech)
Cheers,
Besim, Tatsuki, and Alberto
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2699.html
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- ID #2614 – Illuminating the factors that determine subduction megathrust fault slip style
Session description:
The subduction thrust interface varies in fault slip style, in space and time, through a continuum of slip velocities from steady creep to episodic seismic slip. Geodetic and seismological studies are increasingly illuminating the distribution of these slip styles, but the physical controls on the seismic style of any megathrust segment remain elusive. Several competing hypotheses exist; for example. observations and theoretical models indicate that slow slip and tremor may require high fluid pressures, sea floor roughness has been suggested to both promote and inhibit large earthquakes, and high effective stress may either promote or inhibit creep. It is clear that interdisciplinary discussion on how to test new and existing theories is required. We invite contributions from geodesy, seismology, numerical and analogue modeling, laboratory experiments, and field geology, that address the rheology, frictional properties, and physical characteristics that determine subduction megathrust fault slip style.
Focus Group:
T – Tectonophysics
Co-Sponsors:
G – Geodesy
MR – Mineral and Rock Physics
NH – Natural Hazards
S – Seismology
Conveners:
Ake Fagereng – University of Cape Town/Cardiff University
Matt Ikari – MARUM, University of Bremen
Kohtaro Ujiie – University of Tsukuba
Laura Wallace – University of Texas at Austin
Invited Speakers:
Jean-Paul Ampuero (California Institute of Technology)
Donald Fisher (Penn State University)
Shuichi Kodaira (JAMSTEC)
Thorne Lay (University of California, Santa Cruz)
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2614.html
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- ID #1856 – Science and Societal Lessons from a Decade of Giant Megathrust Earthquakes
Dear Colleagues,
We would like to bring to your attention our AGU session, Science and Societal Lessons from a Decade of Giant Megathrust Earthquakes, which aims to bring together seismologists, geologists, geodesists, modelers, and social scientists, to explore what we’ve learned in the time since the Indian Ocean region was devastated by an unanticipated earthquake and tsunami, ten years ago.
Session Description:
The 2004 moment magnitude (Mw) 9.1 Sumatra-Andaman earthquake and Indian Ocean tsunami spurred scientific studies, international concerns, and societal responses to giant subduction zone earthquakes and their aftermath. In the following decade, subduction zones around the world shot off in a spate of giant earthquakes (magnitude greater than 8.5), including in Chile (Maule, 2010, Mw 8.8) and Japan (Tohoku, 2011, Mw 9.0), further heightening hazard concerns and providing unprecedented opportunities for scientific investigations.
Now, ten years after the 2004 Sumatran-Andaman earthquake that made ‘tsunami’ a globally-recognized household word, we seek presentations on both scientific advancements and lessons learned from the series of recent giant earthquakes, tsunamis and their effects. What have we learned about earthquake and tsunami physics, event recurrence, and future potential? What have we learned about societal vulnerability and possible risk mitigation strategies? We welcome contributions from earth science, social science, and risk-reduction practice.
Focus Group:
S – Seismology
Co-Sponsors:
G – Geodesy
NH – Natural Hazards
SI – Societal Impacts and Policy Sciences
T – Tectonophysics
Conveners:
Andrew Newman, School of Earth and Atmospheric Sciences, Georgia Tech
Lujia Feng, Earth Observatory of Singapore, Nanyang Technological University
Jamie McCaughey, Earth Observatory of Singapore, Nanyang Technological University
Aron Meltzner, Earth Observatory of Singapore, Nanyang Technological University
We hope you will consider submitting an abstract.
Sincerely,
Andrew, Lujia, Jamie, and Aron
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session1856.html
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5. ID: #2815 – Advances in Sub-Aqueous Paleoseismology: New Insights into Earthquake Recurrence
Session Description:
Sub-aqueous paleoseismology is a rapidly advancing field that has the potential to illuminate the long-term history of seismicity, patterns of recurrence, and details of the strength of shaking, and rupture area and segmentation of fault systems. Sub-aqueous investigations offer the advantage of site to site correlation, and longer records than typically possible onshore. Recent great earthquakes have illustrated the need for long records to evaluate the range of earthquakes possible for a given fault system, and to gain a better understanding of the underlying processes in major fault zones and interactions between segments and adjacent faults. We invite submissions in lacustrine and marine paleoseismology across the full range of methodologies. The International Association of Sedimentologists (IAS) is co-sponsoring this session and will provide travel support for student participation.
Focus Group:
T – Tectonophysics
Co-Sponsors:
NH – Natural Hazards
OS – Ocean Sciences
S – Seismology
Conveners:
Chris Goldfinger, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States
Ken Ikehara, Marine Geology Research Group, Geological Survey of Japan, AIST, Tsukuba, Japan,
Maarten E Van Daele, Ghent University, Renard Centre of Marine Geology, Gent, Belgium
Michael Strasser, ETH Zurich, Zurich, Switzerland
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2815.html
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- ID: #3034 – Arcs from the Inside Out
Dear colleagues,
Please consider submitting your AGU abstract to the following session: “Arcs from the Inside Out”
Session Description:
Volcanic arcs are portals to the earth’s interior, where mantle and crustal melts, fluids and gases erupt onto the surface. These materials convey mass and information from the subduction zone, the mantle wedge, and the arc crust. Reading the arc volcanic record is essential for understanding crust generation, continental growth, explosive volcanism the fate of subducted material, and geochemical cycles through the solid earth. This session invites wide-ranging contributions that use the volcano to study magmatic processes in the arc crust, melting processes in the sub-arc mantle, and mass transfer in the subduction zone. We welcome contributions from geochemistry and geophysics; from models, experiments and measurements.
Focus Group:
V – Volcanology, Geochemistry, and Petrology
Co-Sponsors:
DI – Study of the Earth’s Deep Interior
G – Geodesy
S – Seismology
T – Tectonophysics
Conveners:
Terry Plank, Columbia University/Lamont Doherty Earth Observatory
Esteban Gazel, Virginia Tech
Kaj Hoernle, GEOMAR Helmholtz Center for Ocean Research Kiel
Invited speakers:
Jim Gill, University of California, Santa Cruz, USA
Catherine Chauvel, CNRS, Grenoble, France
Ikuko Wada, Tohoku University, Japan
Christy Till, Arizona State University, USA
Best wishes,
Terry Plank, Columbia University/Lamont Doherty Earth Observatory
Esteban Gazel, Virginia Tech
Kaj Hoernle, GEOMAR Helmholtz Center for Ocean Research Kiel
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session3034.html
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- ID: #2987 – Signal propagation and preservation: routing information from the geomorphic engine to the stratigraphic record
Dear Friends and Colleagues,
We invite you to submit an abstract to the session at AGU 2014 entitled: “Signal propagation and preservation: routing information from the geomorphic engine to the stratigraphic record (session ID# 2987).”
We are soliciting contributions that focus on propagation/preservation of environmental signals employing cutting-edge technologies in the analysis of examples from the modern and ancient (also capturing the long-term, deep-time evolution of sedimentary systems and denudation-accumulation history/budget). Contributions from field, experimental, computational, and theoretical studies are welcome.
Session description:
Climate and tectonics drive processes that shape landscapes and influence stratigraphic architecture. Spatial and temporal gradients in climate and tectonics result in perturbations away from steady state. Signals of boundary condition changes propagate through landscapes, potentially influencing many variables including local relief, erosion rates, caliber of sediment in transport, and the sediment flux delivered to transport systems over a range of time scales (1,000 – 1,000,000 yrs). Routing of signals is complicated by the internal dynamics of sediment transport systems, which can modify, or destroy, signals prior to preservation in the stratigraphic record. We solicit presentations that explore signal propagation and preservation across the source-to-sink system, including, but not limited to those exploring routing time scales, signal alteration along transport paths, magnitudes and rates necessary for signal preservation, and how to invert landscape structure and stratigraphic architecture for paleo-boundary conditions. Contributions from field, experimental, computational, and theoretical studies are welcome.
Focus Group:
EP – Earth and Planetary Surface Processes
Co-Sponsor:
OS – Ocean Sciences
Conveners:
Kyle M Straub, Tulane University, New Orleans, LA, United States
Nicole M Gasparini, Tulane University, New Orleans, LA, United States
Andrea Fildani, Statoil Gulf ASA, Houston, TX, United States
Daniel F Stockli, University of Texas, Austin, TX, United States
Invited Speakers:
Sebastien Castelltort (Université de Genève)
Robert Duller (University of Liverpool)
Tao Sun (Chevron)
Brian Romans (Virginia Tech University)
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2987.html
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- ID: #2384 Drilling the Izu-Bonin-Mariana System: First Results and Related Studies
Session Description:
Three IODP expeditions will investigate the northern Izu-Bonin-Mariana (IBM) subduction system during 2014. Expedition 350 aims to drill sediment and rear-arc crust west of the Izu arc volcanic front to understand arc crust differentiation, mantle evolution during arc rifting, and patterns of arc and rear-arc volcanism since Paleogene. Expedition 351 will target sediment and oceanic crust west of the northern Kyushu-Palau ridge to investigate the nature of the crust that predated IBM subduction, the mechanism of subduction initiation, and Paleogene arc evolution. Expedition 352 will target the volcanic sequence in the fore-arc east of the Bonin Islands to investigate subduction initiation and chemical gradients in subducted fluids and mantle melting during early crust production. This leg also will test the hypothesis that supra-subduction zone ophiolites are created in fore-arcs. The first results from all three expeditions will be presented. Presentations on related research also are welcome.
Focus Group:
T – Tectonophysics
Co-sponsors:
GP – Geomagnetism and Paleomagnetism
V – Volcanology, Geochemistry and Petrology
Conveners:
Mark K Reagan
Richard J Arculus
Yoshihiko Tamura
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2384.html
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- ID: #3348 – Crustal construction processes from the Backarc-Arc to the Forearc
Dear Colleagues,
Herewith we would like to invite you to submit an abstract to the AGU Fall meeting session:
“Crustal construction processes from the Backarc-Arc to the Forearc”
The scope of this session is to discuss crustal accretion processes at active/fossil Backarc spreading centers and Arc-Forearc systems, and to compare them to studies of ophiolites onshore on mountain belts (e.g. Alpine-Himalayan, but also any other), and works on ophiolites in the Pacific island chains. We welcome presentations on crustal construction at Backarc-Arc-Forearc systems and also comparisons to Mid-Ocean Ridges. We also encourage contributions that debate on crustal formation processes and ophiolite formation setting.
Session Description:
Studies of active systems indicate that melt generation and crustal accretion vary between Arc-Forearc settings, dominated by flux-melting and diapiric crustal accretion, to Backarc spreading settings dominated by decompression melting and where crustal accretion may be similar Mid-Ocean Ridge (MOR) settings.
On the other hand, studies of ophiolitic remnants of interpreted old analogs are obscured by the enduring debate on Backarc-Arc, Forearc or MOR origin of ophiolites exposed in collision belts.
The scope of this session is to discuss crustal construction processes at active/fossil Backarc spreading centers and Arc-Forearc systems and to compare them to studies of ophiolites onshore on mountain belts (e.g. Alpine-Hymalayan, but also any other), and to works on ophiolites in Pacific island chains.
We welcome presentations on crustal construction at Backarc-Arc-Forearc systems and also comparisons to Mid-Ocean Ridge structure. We also encourage contributions that debate on crustal formation processes and ophiolite formation setting.
Focus Group:
T – Tectonophysics
Co-Sponsors:
G – Geodesy
OS – Ocean Sciences
V – Volcanology, Geochemistry and Petrology
Conveners:
Carlos J Garrido, CSIC-UGR, Budapest, Budapest, Hungary
Cesar R Ranero, ICREA at CSIC, Barcelona, Spain
Ingo Grevemeyer, GEOMAR, Kiel, Germany
Tomoaki Morishita, Kanazawa University, Kanazawa, Japan
Invited Speakers:
Robert A. Dunn — SOEST, University of Hawaii
Osamu Ishizuka — Geological Survey of Japan & IFREE, JAMSTEC
C. Johan Lissenberg — University of Cardiff
We hope you will be able to submit an abstract and attend the session.
Sincerely,
Carlos J. Garrido, CSIC-UGR, IACT, Granada, Spain
Cesar R. Ranero, ICREA at CSIC, Barcelona, Spain
Ingo Grevemeyer, GEOMAR, Kiel, Germany
Tomoaki Morishita, Kanazawa University, Kanazawa, Japan
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session3348.html
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10. ID: #2208 – Marine Geohazards
Session Description:
Marine geohazards are sudden and extreme geologic events that affect coastal areas and seabed infrastructure on local, regional and transoceanic scales. The hazards include submarine earthquakes, explosive volcanic eruptions and collapses of volcanic edifices, submarine slope failures, and tsunami generation. The sediment record of past offshore and coastal hazardous events is often better preserved in the marine/ lacustrine environment than on land and can be investigated in great detail with high-resolution geological and geophysical tools. We seek contributions that highlight new results and methodologies in marine paleoseismology, submarine landslide studies, tsunami generation and volcanic eruptions. We also emphasize studies that span the major process domains (e.g., the shoreline and the shelf-edge) of both active and passive continental margins, studies that provide constraints on recurrence intervals for hazardous events, and studies that link fundamental geological processes to the assessment of marine geohazards.
Focus Group:
OS – Ocean Sciences
Co-Sponsors:
EP – Earth and Planetary Surface Processes
NH – Natural Hazards
S – Seismology
T – Tectonophysics
Conveners:
Daniel S Brothers, Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States
Jason D Chaytor, USGS, Woods Hole, MA, United States
Uri S Ten Brink, US Geological Survey, Woods Hole, MA, United States
Katie Maier, Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2208.html
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- ID: #2326 – Satellite Remote Sensing and Management of Natural Disasters
Dear All,
Please submit your abstract for the NH Session #2326 on Satellite Remote Sensing and Management of Natural Disasters
Session Description:
The frequency of natural disasters related to land, ocean, atmosphere and snow around the globe is apparently on the increase. In many instances this is believed to be associated with climate change. Small satellites and unmanned aerial vehicles are increasingly being used for monitoring a wide variety of natural disasters and contributing to the management of their effects. This session will discuss remote sensing applications related to ongoing and future satellite missions and unmanned aerial vehicles in mapping, monitoring, damage assessment and early warning of all kinds of natural disasters (earthquakes, volcanoes, floods, droughts, subsidence, sinkholes, landslides, tornadoes, hurricanes/typhoons/cyclones, forest fires, tsunami, lightning, dust storms). Satellite remote sensing data are also being used to evaluate known vulnerable areas with the goal of improving forecast capability for natural disasters. Oral and poster contributions are welcome.
Focus Group:
NH – Natural Hazards
Co-sponsors:
A – Atmospheric Sciences
H – Hydrology
S – Seismology
T – Tectonophysics
Conveners:
Ramesh P Singh, Chapman University, Orange, CA, United States
Amir AghaKouchak, University of California Irvine, Irvine, CA, United States,
Cathleen E Jones, NASA Jet Propulsion Laboratory, Pasadena, CA, United States
David M. Tratt, The Aerospace Corporation, Pasadena, CA, United States
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2326.html
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- ID: #3396 Collaborative Studies on Mantle Melting
Dear All,
… remembering the reminders that abstract submissions for the AGU Fall Meeting 2014 are due on August 6th, we are happy to announce the following session on mantle melting:
Session description:
Constraining mantle composition and melting processes are crucial for understanding planetary dynamics and evolution. After decades of work, some fundamental questions regarding source composition, melt migration, storage, and evolution remain unanswered. Collaborative studies that combine the strengths of geochemistry, petrology, geology, geodynamics, geophysics, and/or mineral physics can advance our understanding of mantle melting and related volcanism. We invite contributions that study melting of the asthenosphere in various tectonic environments (e.g., mid-ocean ridges, subduction zones, hotspots), as well as deep planetary melting (e.g., transition zone, magma ocean).
Focus Group:
DI – Study of Earth’s Deep Interior
Co-Sponsors:
MR – Mineral and Rock Physics
P – Planetary Sciences
S – Seismology
T – Tectonophysics
V – Volcanology, Geochemistry and Petrology
Conveners:
Kate Rychert (Univ. Southampton)
Esteban Gazel (Virginia Tech)
Maxim Ballmer (Univ. Hawaii; ELSI/Tokyo Tech)
Hope to see you in San Francisco,
Maxim, Kate, and Esteban
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session3396.html
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13. ID: #2004 – Melt and Volatiles: Two Key Ingredients in a Mantle
Dear Colleagues,
We would like to invite you to submit an abstract to the AGU session on “Melt and Volatiles: Two Key Ingredients in a Mantle”. This session is honor of Dana Medal awardee Marc Hirschmann.
Session description:
Melting and volatiles strongly influence the geochemical and geodynamical evolution of the mantles of Earth and the other terrestrial planets. Over the past two decades, our understanding of melting at mantle conditions has advanced significantly through a combination of experimental, analytical, and theoretical approaches. We encourage submissions to what we are sure will be a spirited discussion of the many factors that influence melting in the mantle. Topics could include the roles played by volatile elements in melting processes, the signatures of mantle heterogeneity, the geochemical tracers of mantle source regions, the constraints on melting in the deep Earth, and the physical implications of such melting. Contributions spanning a range of methodologies that encompass experimental, theoretical, and geodynamic investigations are welcomed.
Focus Group:
V – Volcanology, Geochemistry and Petrology
Co-Sponsors:
DI – Study of the Earth’s Deep Interior
MR – Mineral and Rock Physics
MSA – Mineralogical Society of America
P – Planetary Sciences
Conveners:
David Kohlstedt
Tony Withers
Thank you,
David Kohlstedt and Tony Withers
dlkohl@umn.edu and tony.withers@uwo.ca
https://agu.confex.com/agu/fm14/webprogrampreliminary/Session2004.html