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The Arctic: An AGU Joint Special Collection

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Last updated:
16 September 2016
The Arctic has become the focus of many new investigations and studies across a number of disciplines. In many cases, this research is integrating diverse new data sets, observations, and modeling, and making connections among and across the biosphere, oceans, atmospheres, space, and geophysical environments. These papers include historical and new research on the Arctic and represent the following AGU journals: Earth’s Future, Earth and Space Science, Geochemistry Geophysics Geosystems (G-Cubed), Geophysical Research Letters, Global Biogeochemical Cycles, JAMES (Journal of Advances in Modeling Earth Systems), JGR: Oceans, JGR: Atmospheres, JGR: Solid Earth, JGR: Space Physics, JGR: Biogeosciences, JGR: Earth’s Surface, Reviews of Geophysics, Space Weather, and Water Resources Research.

Slow Slip Phenomena and Plate Boundary Processes

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Last updated:
16 September 2016

Slow slip is a new kind of fault slip behavior found predominantly on the boundaries between tectonic plates. In addition to geodetically-observed slow deformation, possible signatures of slow slip include several diverse phenomena often associated with slow slip including tremor, low-frequency earthquakes, and slowly-migrating triggered seismicity. This theme encompasses observational, theoretical, modelling, and laboratory studies focusing on any of these aspects of slow slip, or their implications for fault mechanics or earthquake hazard. The February 2016 Chapman Conference on Slow Slip Phenomena highlighted current understanding in the field and served as the catalyst for this collection. However, the call for papers includes other work that falls within the theme.

This Theme is open to submissions jointly in Geochemistry, Geophysics, Geosystems and JGR-Solid Earth.

AGU Commentaries

This Special Collection brings together commentaries published across all of AGU's journals. These discuss significant research, current research trends, science policy, and other topics of general interest, and are invited by the editors of each journal. Each commentary is freely available.

Stress, Strain and Mass Changes at Volcanoes

1 January 2015

Stress at active plate boundaries - measurement and analysis, and implications for seismic hazard

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Last updated:
22 July 2016

This special collection will bring together studies designed to quantify and analyse the state of stress at active plate boundaries. The ultimate aim is to find a way forward to use stress measurements as a means of directly assessing seismic hazard. We solicit papers using a wide range of approaches, from in situ measurements, seismology, geodesy and numerical stress modelling. Particular issues of interest are the absolute level of stress and how stress varies both in space and time between and during earthquakes.

Credit: Richard Jongens, GNS Science / Earthquake Commission.

Rock Physics of the Upper Crust

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Last updated:
24 June 2016
Submission acceptance begins: July 15, 2016

Submission deadline: March 31, 2017

Geophysicists are skilled at deducing static earth structure from observations of seismic, electromagnetic, and gravitational fields. A fuller appreciation of earth dynamics cannot, however, be realized without a rigorous understanding of the physical properties of earth materials under in situ conditions. Rock Physics investigations provide this key link between rock physical properties and geophysical, deformation and transport signatures. Over the last half-century, Rock Physicists have made considerable progress addressing problems in exploration geophysics, volcanology, crustal seismology, earthquake faulting and petrophysics. Somewhat regrettably, however, much of this work is carried out independently within these increasingly specialized communities; and experiences are not as widely shared as they should be.

This knowledge divide motivated the workshop “Rock Physics of the Upper Crust” held July 11-13 in Hilo, Hawaii, jointly sponsored by the SEG and the AGU.  The major goal of the workshop was to gather Rock Physicists from these various disciplines to share information of state-of the art laboratory measurements, theory, modelling and interpretation that will assist our common goals of evaluating the effects of fractures, rock composition, microstructures, and fluids on geophysical observations. This workshop centered on new and novel practices in experimental design, modelling, and borehole logging as illustrated by results from Scientific Drilling programs, hydrocarbon and geothermal exploration, and volcanology, among others.   The workshop consisted of six major themes of tectonics, transport properties, rock alteration, fluids, numerical modelling, and theory; and nearly 60 papers were accepted for presentation. 

The meeting provided a comprehensive overview of the state of our understanding in Rock Physics; this Special Collection in the Journal of Geophysical Research – Solid Earth will be a mid-decade record of this progress.   Manuscripts are invited for a special section on advanced topics in Rock Physics relating to the themes of the Workshop.

Report on Surveyor 5 Project

15 November 1968
Surveyor 5 landed in Mare Tranquillitatis. The spacecraft and its operation are briefly described in this paper. An \u00CE\u00B1-particle backscattering instrument abroad Surveyor 5 provided the first on-surface measurements of the elemental composition of the lunar surface, and a magnet indicated the amount of material with high magnetic susceptibility.

Studies of Seamount Trails: Implications for Geodynamic Mantle Flow Models and the Geochemical Evolution of Primary Hotspots

1 June 2014
This special section is the outcome of a symposium held at the Lamont-Doherty Geological Observatory November 17th, 1982, on the origin and evolution of seamounts. The topic for the symposium arose from the realization that although there is now a wealth of new ideas on the geology, geophysics, and geochemistry of the ocean floor, the study of seamounts has been relatively neglected despite their great importance to plate tectonics.

Volcanism and the Atmosphere

16 April 2014