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Deformation, Ecosystem Structure, and Dynamics of Ice (DESDynI)
Earth's surface and interior are undergoing a constant process of change. Variations in the ice sheets and land cover impact the climate and the environment. Violent events such as earthquakes, volcanic eruptions, landslides, and floods reshape the surface and pose significant hazards.
DESDynI is a proposed dedicated U.S. InSAR and LIDAR mission optimized for studying hazards and global environmental change.
http://desdyni.jpl.nasa.gov
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Solid
Earth Science Working Group (SESWG)
Understanding
the dynamics of the solid Earth is critical for developing
an interconnected view of Earth science. The dynamics of the
solid Earth are, in fact, quite varied: tectonic plates shifting,
coasts eroding, and volcanic eruptions occur from geologic
timescales to sudden, catastrophic moments.
Experiments
conducted over the past decade have shown that it is possible
to study the dynamics behavior of the Earth from space. Satellite-based
measurements are among the most practical and cost-effective
techniques for producing systematic data sets over a wide
range of spatial and temporal scales. The combination of space-based
and surface measurements has the potential to mitigate the
hazards and manage the risks associated with natural disasters.
Read the review of the SESWG report from the National Research Council of the National Academies [click here].
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Global
Earthquake Satellite System (GESS)
The
Global Earthquake Satellite System (GESS) study responds to
the clearly articulated need within the solid-Earth science
community for dense surface deformation data. It is a detailed
implementation plan in alignment with the recommendations
of the Solid Earth Science Working Group (SESWG), and charts
the course for NASA to make major contributions to the interagency
EarthScope program, while broadening those goals to a global
scope.
In
the GESS study, we explored the requirements space for various
components of an integrated system, but focused our mission
architecture studies on systems that deliver high-accuracy,
high-resolution surface deformation using InSAR. Detailed
science requirements were gathered from the wider community
to guide the studies. |
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Our
Restless Planet
We
live on a restless planet. Earth is continually influenced
by the sun, gravitational forces, processes emanating from
deep within the core, and by complex interactions with oceans
and atmospheres. Accurate
diagnosis of our restless planet requires an observational
capability for precise measurement of surface change, or deformation.
Measurement of both the slow and fast deformations of Earth
are essential for improving the scientific understanding of
the physical processes, and for optimizing responses to natural
hazards, and for identifying potential risk areas. |
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Geo-Hazards Natural Laboratory for the Asia Pacific Arc and Western North America Meeting Report
An international meeting was held in Maui, Hawaii, to explore options for expanding several international Solid Earth programs into the larger framework of a Geo-Hazards Natural Laboratory for the Asia Pacific Arc and Western North America. This meeting topic falls within the larger context of Natural Laboratories worldwide, including discussions in Europe about the Alpine-Himalayan belt and the Mediterranean region. Participants met to (1) review the status of existing in situ networks and currently available remote sensing data sets; (2) determine what additional remote sensing observations are needed to achieve Natural Laboratory goals; and (3) draft recommendations to be forwarded to the international space agencies.
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InSAR Workshop Summary Report
Errata for the Workshop Summary Report
InSAR movie (close captioned version)
This report summarizes the major findings of a symposium attended by 260 scientists and engineers in an effort to guide U.S. efforts in Interferometric Synthetic Aperture Radar (InSAR), a critical tool for studying dynamic changes of the Earth’s surface and natural hazards associated with these changes. InSAR observations provide critical and otherwise unavailable data enabling comprehensive, global measurements to better understand and predict changes in the Earth system. The InSAR Workshop was funded jointly by NASA’s Earth Science program, the Geosciences Directorate of the National Science Foundation, and the U.S. Geological Survey. This report was assembled by the Reports Committee of the InSAR Working Group and echoes the call for "InSAR everywhere, all the time."
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