Month: July 2016

Please see below for more sessions of interest to the GeoPRISMS Community, taking place at the 2016 AGU Fall Meeting, December 12-16 in San Francisco. AGU abstract submission deadline is August 3, 2016

https://fallmeeting.agu.org/2016/

Submit your abstract: http://fallmeeting.agu.org/2016/abstract-submissions/

Your session is not listed? Email us at info@geoprisms.nineplanetsllc.com and we’ll be happy to include your session to the list.

Full list available at: /meetings/agu-sessions/

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S029: Temporal changes of seismic structures in response to a great earthquake

Session ID#: 13258

Temporal changes of the lithospheric structure have been a major topic in Solid earth and stay always challenging to detect small variations of the seismic structure associated to great earthquakes. Associated deformations (uplift or subsidence) are actually not well understood even if several models suggested such as opening or closing cracks, stress loading, changes of water condition in the crust. Moreover, looking at the seismic structures along subduction zones in East Asia, it appears also that these structures can be interpretation as asperities which potential can generate future great events.

The session will focus on geophysical imaging of megathrust subduction zones by using different kind of geophysical data in order to provide information of the lithospheric properties and temporal changes of these regions. We invite oral and poster contributions looking at different megathrust subduction zone and using different approaches as ambient field, controlled sources, seismic tomography, electromagnetism, gravity, GNSS, InSAR.

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T012: Insights on the tectonic evolution of the Salton Trough and northern Gulf of California from recent multidisciplinary studies

Session ID#12952

Oblique motion at the Pacific-North American plate boundary is rifting the continent in the Salton Trough in southern California and northern Mexico, and in the northern Gulf of California. Rapid sedimentation from the Colorado River has influenced the mechanisms of rifting, resulting in large differences from the southern Gulf, which has experienced similar total extension. Rift-related magmatism is localized at the surface but more extensive at depth. Substantial thinning and perhaps complete breakup of the continent have occurred, but seafloor spreading has apparently not initiated. Transform and extensional faults interact in complex patterns, with implications for earthquake hazard. Recent multi-disciplinary studies in both countries have focused on rifting processes and the earthquake hazard of this geologic province. This session invites contributions from all disciplines that address our understanding of the tectonic evolution and the magmatic and deformation processes of this complex and evolving plate boundary.

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T019: Models and Experiments that couple flow and deformation in the shallow crust

Session ID#: 13682

Coupled deformation and fluid flow underlie a wide range of fundamental behaviors and processes in the shallow crust, including rock and sediment strength; mass, heat and volatile fluxes; and the links between these fluxes and subsurface biological communities. Recent advances have the potential to illuminate these fundamental processes through the application and development of coupled models that describe deformation and fluid flow in response to the evolution of the full stress field, in combination with experimental studies that extend established soil mechanics concepts to geologically relevant higher stresses and longer time scales. Examples include pore pressure in subduction zones and sedimentary basins, slope failures, subglacial till deformation and hydrology, pressure and stress interaction around deep-well injection, stress and strain surrounding complex structures, and dynamic fault zone slip processes. We welcome experimental, theoretical, and field-based contributions describing deformation behavior and rheology, and theoretical approaches to illuminating earth behavior.

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T027: Origin, architecture, and dynamics of extensional basins

Session ID#: 12396

This session presents recent advances in our understanding of the formation and evolution of sedimentary basins, from rifts and passive margins to cratonic basins, within which rests more than a hundred million years of geological history. This session will present studies from surface to deep: sedimentology to seismology (and all the disciplines in between). The accumulated sediments, the petrology and chemistry of basaltic rocks and the present day seismic structure of the crust and upper mantle are partial records of this evolving system. In this session we aim to bring together research that generates, models and interprets these various observational constraints. Key open questions include: What factors decide whether break-up takes place? What is the role of mantle plumes and volcanism? How do extensional systems link and record climate changes, erosion and deposition? What causes localization of rifting, segment boundaries, transfer zones, and pull apart basins?

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T040: The Eastern North American Margin: Structure, dynamics, history, and processes

Session ID#: 13764

The Eastern North American Margin (ENAM) is today a passive continental margin, but it records two complete Wilson cycles of supercontinent formation and dispersal, involving fundamental tectonic processes such as subduction, continental rifting, and passive margin evolution. It is a major population center as well as a locus for substantial natural hazards, including intraplate earthquakes and offshore landslides. Extensive data collection in eastern North America has recently been enabled through the EarthScope and GeoPRISMS programs and related efforts. We invite submissions that address all aspects of the structure, dynamics, and history of ENAM across a range of Earth science disciplines.

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V025: Speciation and Redox: A Volatile Relationship

Session ID#: 12980

Dear all,

Please consider submitting an abstract to the session, “Speciation and Redox: A Volatile Relationship”, for this year’s AGU joint meeting in December. The deadline for abstract submission in August 3, 2016. Please share with all interested parties!

The presence of volatile elements in planetary interiors transforms fundamental aspects of petrogenesis, including physical properties of solid source material; silicate melt generation, transport, and storage; and volcanic eruptive style. The complex interplay between volatile speciation and redox state results in a wide range of volatile element behaviors across the solar system and within the Earth. We welcome submissions that explore the relationship between redox and volatile speciation using recent breakthroughs in spectroscopy (e.g., FTIR, Raman, and XANES) and mass spectrometry (e.g., SIMS and laser sampling) to analyze experimental and natural samples. We will discuss the abundance, distribution, speciation, and redox state of volatiles in planetary interiors and volcanic products; and we will examine the far-reaching implications of the relationship between volatile speciation and redox for the evolution of planetary bodies, from their cores to their atmospheres.

Looking forward to seeing you in San Francisco,

Maryjo, Megan, and Erik

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V026: Sulfur (Bio)geodynamic Cycles on Earth and Terrestrial Planets

Session ID#: 13340

Sulfur is exchanged between the Earth’s surface and the mantle via subduction zones, magmatism, volcanic degassing, hydrothermalism, biological sulfate reductions and continental weathering. It also plays important roles in geological processes on other terrestrial planets. Yet, its transport and storage from the oceans and continents into the deep Earth, and secular changes in the mode of S-exchange between different igneous and surficial reservoirs remain discussed. Sulfur behavior is also related to its multiple valence states, implying complex interplays with redox state, and affecting sulfur partitioning between minerals, melts and fluids. This session seeks contributions from geochemistry, petrology, laboratory experiments, and field geology addressing the fate of sulfur in various geodynamic settings on terrestrial planets. We will also address the role of sulfur in the redox evolution and biochemical cycles, volcanic degassing, the distribution of chalcophile elements and ore-deposit formation, and coupling with other key volatiles such as carbon and halogens.

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EP011: Connecting Geodynamics and Surface Processes: Theoretical and Field-Based Approaches

Session ID#: 12254

Understanding the feedbacks between solid-Earth deformation, surface processes and landscape evolution requires a process-based approach that integrates observations and models across all spatial and temporal scales. The Earth’s surface is a dynamic interface that evolves through the influence of tectonic and geomorphic drivers. Changes in tectonic forcings generally have spectacular geomorphological consequences. In turn, processes of surface erosion and transport can alter the near-surface stress field and influence fault evolution, uplift/subsidence patterns and surface heat flow. These mechanisms feed back on topography, and thus on the activity of geomorphic agents. This session sets out to explore current research into coupled problems of geomorphology, surface processes and geodynamics. We welcome contributions utilizing a combination of field, experimental, analytical and numerical approaches.

Please save the date and plan to attend the GeoPRISMS Rift Initiation and Evolution Theoretical and Experimental Institute!

We are pleased to announce that we will hold a Theoretical and Experimental Institute (TEI) for the Rift Initiation and Evolution Initiative (RIE) from February 8 to 10, 2017 at the Hotel Albuquerque in Albuquerque, New Mexico. The TEI will be preceded by symposium for early career scientists (including advanced graduate students and post-docs) on February 7, and will be followed by an optional field trip on February 11.

This TEI will allow the community to discuss progress towards the science objectives of the RIE initiative, including observations, modeling and experiments from the EARS and ENAM primary sites and other rift localities, to continue planning for new domestic and international collaborative work, and entrain new talent and disciplines.

We expect to be able to cover lodging and food for 80-90 participants and have partial travel funding available for graduate students, early career scientists and invited speakers. The preliminary schedule and application form will be announced in September. We expect that the application deadline will be in early November with participants selected before Fall AGU.

Please save the date and plan to join us!

The GeoPRISMS Office

Questions? Contact the GeoPRISMS Office at info@geoprisms.nineplanetsllc.com

Please see below for sessions of interest to the GeoPRISMS Community, taking place at the 2016 AGU Fall Meeting, December 12-16 in San Francisco. AGU abstract submission deadline is August 3, 2016.

https://fallmeeting.agu.org/2016/

Submit your abstract: http://fallmeeting.agu.org/2016/abstract-submissions/

Your session is not listed? Email us at info@geoprisms.nineplanetsllc.com and we’ll be happy to include your session to the list.

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S003: Advances in understanding of tremor, slow slip and other slow earthquake phenomena

Session ID#: 14143

Slow earthquakes encompass a variety of behaviors including tectonic tremor, very low-frequency earthquakes, and aseismic slow slip events (SSEs). At times, these behaviors are coincident, while at other times they are observed separately. Slow earthquakes may increase stress loading on the seismogenic zone and hold clues to a more thorough understanding of regional seismic cycles. Studies have indicated slow earthquakes to be a potential precursor of megathrust earthquakes, but the necessary linkage remains unclear. Additionally, up-dip transitional zones showing evidence of slow earthquakes can rupture coseismically, producing larger tsunamis and earthquakes than previously expected.  This session aims to provide an understanding of slow slip and associated seismic phenomena, and their possible connection to large damaging earthquakes. We welcome abstracts that cover seismological, geodetic, and geological observations, seismicity catalog statistics, laboratory experiments, and theoretical modeling.

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T026: One Rift, Two Rift, Magma-Rich Rift, Magma-Poor Rift: Deformation, magmatism, volatile fluxes, and their consequences in the East African Rift SystemT041: The role of the forearc mantle in subduction zone processes

Session ID# 12985

The East African Rift system represents one of the largest active continental rift systems in the world, and it exhibits remarkable variability along its length in the amount and style of extension, seismicity, volcanism, volatile fluxes and surface morphology.  As such, the EARS presents a natural laboratory for investigating the controls on continental extension from initiation to final breakup and consequences for hazards, microclimate and ecosystems.  We invite abstracts from diverse fields (e.g., geochemistry, geodynamics, geology, geophysics) focused on elucidating the evolution of tectonic deformation, magmatism, and volatile fluxes during continental rifting in the EARS and comparative studies of other extensional systems elsewhere around the globe.

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T035: Subduction Top to Bottom (ST2B-2)

Session ID#: 12903

From top-to-bottom, many geological, geophysical, petrologic/geochemical, and theoretical advances have been made toward understanding subduction zone processes and dynamics since AGU Geophysical Monograph “Subduction Top to Bottom” was published 20 years ago. This session and a related themed issue in GEOSPHERE are intended to revisit the issues that were explored in the 1996 publication and re-assess them in light of recent advancements as well as explore new discoveries and advances in subduction zone research. We invite the broadest possible range of contributions, including subduction-related hazards (volcanic eruptions, earthquakes and tsunamis) and resources.

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T039: The Aleutian-Alaska Arc: Volcanic and Tectonic Processes

Session ID#: 12941

The Aleutian-Alaska arc has seen a recent explosion of research motivated by coordinated programs such as GeoPrisms, EarthScope and The Alaska Volcano Observatory. In this session we hope to bring together new observations and insights into the active tectonic and magmatic processes and evolution of the Aleutian-Alaska subduction zone, with comparisons to subduction zones world-wide. Especially encouraged are presentations that combine geological, geophysical and geochemical datasets, as well as geodynamic models and laboratory experiments spanning major portions of the subduction system – from the trench outer rise to the megathrust, from the plate coupling transition zone to the regions of fluid and melt production, and from the mantle to surface volcanism.

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T041: The role of the forearc mantle in subduction zone processes

Session ID# 12515

The forearc mantle wedge forms at the onset of subduction. Upon dehydration of the downgoing plate, some parts of the forearc wedge become hydrated, forming serpentinites.  Hydration of the forearc wedge is an important factor that affects subduction dynamics, for example, by influencing the strength and buoyancy of the wedge and volatile recycling. However, in spite of numerous efforts, the physical and chemical conditions in the forearc mantle wedge remain elusive. To what extent/depth is it serpentinized? How is it related to the sliding behavior of the plate interface? Is part of the wedge dragged down-dip with the slab? Does it play a role in the generation of arc magmas? Is it a source or a sink in the deep volatile cycle? This session seeks contributions from geophysical and geochemical studies, petrography, lab experiments and field observations that provide new insights into the evolution of the forearc mantle wedge.

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DI009: Multidisciplinary constraints on the distribution of melt and volatiles and their roles through the subduction system

Session ID#: 12536

Subducting slabs transport geodynamically and geochemically significant quantities of volatiles to the Earth’s interior. A large portion of these materials returns to the surface/crust via volcanic arc and back-arc magmatism. The return flux involves processes from slab dehydration to hydration and melting of the mantle wedge to magma transport and eruption within the overriding plate. These processes are inherent to subduction zone dynamics and impact tectonic forces, and also critical for estimating Earth’s water budget. Recent datasets, both onshore and offshore, and improved modeling capabilities provide opportunities to study the transport of melts/fluids/volatiles through the subduction system. We welcome stimulating contributions from all subdisciplines – field observations, laboratory results, and modeling – seeking to harness complementary constraints from multiple data types and to foster interdisciplinary collaboration. We particularly welcome studies using amphibious datasets that show the scientific potential of bridging the land/sea barrier.

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ED033: Sympathy for the Data: Novel approaches to the art of data visualization

Session ID# 13499

We would like to invite the community to consider submitting abstracts to our AGU 2016 Fall Meeting session, which focuses on novel data visualization techniques. Specifically, we would like to bring together a diverse range of geoscientists to discuss the many different platforms and technologies being used and developed for data visualization. It is listed in the Education section (and so doesn’t count towards the 1 submitted, 1 invited abstract limit for the AGU Fall Meeting), and is cross-listed with Public Affairs. This session is also being considered for alternate presentation formats.

Representing data in a clear, concise and attractive manner is the primary tool scientists use to communicate their research at all levels. Insights into complex systems within Earth sciences often arise through the integration of highly varied, multidimensional, and ever-growing datasets. However, concisely communicating results within traditional frameworks can be challenging.  Developing clear, interactive and intuitive visualization software and pedagogy can aid scientists in sharing new and innovative research with their peers and the general public. We invite abstracts focused on best practices of data visualization in the Earth sciences as well as introducing new approaches and platforms.  Abstracts will ideally center on data visualization across a breadth of subjects and the inter-disciplinary potential of methods/products. Although the primary focus of the session focuses on visual aids, alternative approaches (e.g. the use of sounds) to communicating data are encouraged.

Please consider contributing to what we hope is a beneficial discussion of the best data visualization techniques that we, as scientists, can continue to build on in the future to better communicate our research. We look forward to your contributions! Any questions can be addressed to Martin (martin@seismo.wustl.edu). We are very interested in receiving abstracts from a wide range of researchers to develop networks across disciplines.

Dear all,

We are going to have an international workshop on slow earthquakes on 13-15 September 2016 at Earthquake Research Institute, University of Tokyo, Tokyo, Japan. The primary focus of this workshop is to gain better understanding of slow earthquakes through geophysical observations, field surveys, laboratory experiments, theoretical studies, numerical simulations, and so on. We also welcome contributions on the relation between slow earthquakes and ordinary earthquakes, especially mega-thrust earthquakes, seismic cycles, and related topics.

Support for travel expense for speakers: partial support available (not all of the requests would be accepted; please send a CV and a statement of interest to H. Hirose (hitoshi.hirose@ruby.kobe-u.ac.jp) if you want to apply)

Website: https://sites.google.com/site/wssloweqs2016/

Invited speakers:

Please submit title of your presentation at:

https://docs.google.com/forms/d/1p3vX3hiaGXqurrtfxa_ypf6KoXCmJzV4pnMZLCft5BQ/viewform

This workshop is supported by Cooperative Research Programs of ERI The University of Tokyo and DPRI Kyoto University.

We look forward to your submission,

Hitoshi Hirose, Yusuke Yamashita, Yoshihiro Ito, Aitaro Kato, Kazushige Obara

You still have time to submit a proposal to host a mini-workshop at AGU Fall Meeting 2016.

DEADLINE EXTENDED THROUGH JULY 14!

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Dear GeoPRISMS Community,

We are pleased to announce that this year we will again be able to host a few mini-workshops at the 2016 AGU Fall Meeting (December 12-16). A mini-workshop is a research meeting that is held during an evening of the Fall Meeting or on the Sunday leading up to the meeting. Examples of mini-workshops held in association with recent and upcoming national and international meetings can be found at:

/meetings/mini-workshops/

Mini-Workshops offer excellent opportunities to jump-start science discussions, as well as to coordinate implementation for future GeoPRISMS studies, both for primary sites and thematic studies. We encourage you to consider such an undertaking. The GeoPRISMS Office provides logistical support, a meeting room and refreshments. We do not cover any travel costs or per diem to the organizers or participants.

If you would like to host a GeoPRISMS-related Mini-Workshop in association with the 2016 AGU Fall Meeting (12-16 December), we invite you to submit your proposal to the GeoPRISMS Office at info@geoprisms.nineplanetsllc.com. The proposals will be reviewed and ranked by the GeoPRISMS Steering and Oversight Committee (GSOC). The number of mini-workshops is limited but we expect to be able to host two to three events.

The deadline for upcoming Mini-Workshop proposals is July 1, 2016. The proposal guidelines are described on the GeoPRISMS website at: /meetings/mini-workshops/. We encourage you to contact the GeoPRISMS Office with questions or for advice prior to submitting at info@geoprisms.nineplanetsllc.com.

We look forward to hearing your ideas.

-The GeoPRISMS Office and GSOC

A proposal for a community amphibious seismological experiment in Alaska is being prepared for the GeoPRISMS deadline, to address high-priority scientific problems across the Alaska margin. The plan addresses the high scientific priorities of the Amphibious Array Futures Workshop report as they address the GeoPRISMS and EarthScope Science plans in a region of great earthquakes and abundant volcanism. The draft deployment plan along with links to these reports are all on the project web page:

/research/community-projects/alaska/

That plan is open for community feedback through July 10, 2016. We encourage all interested parties to review the draft deployment plan and map, and provide any feedback. The draft plan discusses the ways in which feedback would be most helpful and the overall structure of the deployment, as well as a map and rationale for the array design. A form for providing feedback and instructions can be found on the project web page; please use this feedback mechanism rather than emailing the PI’s directly.

Dear GeoPRISMS Community,

/meetings/mini-workshops/

Mini-Workshops offer excellent opportunities to jump-start science discussions, as well as to coordinate implementation for future GeoPRISMS studies, both for primary sites and thematic studies. We encourage you to consider such an undertaking. The GeoPRISMS Office provides logistical support, a meeting room and refreshments. We do not cover any travel costs or per diem to the organizers or participants.

If you would like to host a GeoPRISMS-related Mini-Workshop in association with the 2016 AGU Fall Meeting (12-16 December), we invite you to submit your proposal to the GeoPRISMS Office at info@geoprisms.nineplanetsllc.com. The proposals will be reviewed and ranked by the GeoPRISMS Steering and Oversight Committee (GSOC). The number of mini-workshops is limited but we expect to be able to host two to three events.

The deadline for upcoming Mini-Workshop proposals is July 1, 2016. The proposal guidelines are described on the GeoPRISMS website at: /meetings/mini-workshops/. We encourage you to contact the GeoPRISMS Office with questions or for advice prior to submitting at info@geoprisms.nineplanetsllc.com.

We look forward to hearing your ideas.

-The GeoPRISMS Office and GSOC