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stripes Terrestrial Remote Sensing

Portion of a esistivity plot from Dr. Don Thomas. Imaging Earth's Subsurface with Magnetotellurics.

HIGP faculty members, in a partnership with Lawrence Berkeley National Laboratory, are working on a joint project on the hydrothermal systems of Hawaii's active volcanoes. The work expands the capabilities of the magnetotelluric survey method to map both subsurface resistivity and permeability. With supplemental State funding, this effort also provides a comprehensive assessment of Hawaii's prospective geothermal resources statewide. In a companion effort, Drs. Don Thomas and Nicole Lautze are conducting a research drilling program to provide ground-truth stratigraphic and hydrologic data for magnetotelluric surveys in the Humu'ula Saddle of the Big Island. The diagram shows a portion of a cross-section through the Humu'ula Saddle showing distribution of resistivity, and likely groundwater locations, within the Saddle region (courtesy of D. Thomas).
GOES satellite image, 2012, of Hawaiian Islands Thermal Remote Sensing of Volcanoes.

Several faculty within HIGP are involved with the analysis of volcanic thermal anomalies, using spacecraft, aircraft, and ground observations. Data are made available on the HIGP web site http://goes.higp.hawaii.edu/goes/. Drs. Flynn and Rob Wright developed a global volcano monitoring system using data from NASA's MODIS instrument on the Terra spacecraft, which forms a major part of NASA's Earth Observing System (EOS) interdisciplinary science investigation that is led by the University of Hawai'i (http://modis.higp.hawaii.edu/).
Portion of a NOAA-AVHRR satellite thermal image of Paris from Dr. Benedicte Dousset. Urban Heat Waves.

Using satellite-derived thermal images of cities Dr. Bénédicte Dousset is studying the the urban heat wave—the complex phenomenon that drives up temperatures. Buildings, pavement, and other infrastructure absorb heat during the day and reradiate it throughout the night. Climate change and summer warming trends are increasing the incidence, intensity, and duration of heat waves. For example, Dr. Dousset analyzed land surface temperature images of Paris, detailing the spatial distribution of heat-related deaths during a 2003 heat wave. Research shows lack of cooling at nighttime can make urban heat waves deadly, with risk of death highest for elderly people and those with pre-exisiting respiratory or cardiovascular illness. This research can inform the development of warning systems and mitigation strategties, such as creating more parks in the urban cores. The diagram shows a portion of a NOAA-AVHRR satellite thermal image of Paris (courtesy of B. Dousset).


For more information on Terrestrial Remote Sensing at HIGP contact: Bénédicte Dousset, Luke Flynn, Paul Lucey, Peter Mouginis-Mark, Donald Thomas, and Rob Wright.




  Updated 21 December 2015.


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