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Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: Temperature‐depth data from six boreholes in western Utah and nine boreholes in southeastern Utah are reanalyzed for evidence of ground surface temperature (GST) histories. We invert the temperature‐depth data using the functional space inverse algorithm of Shen and Beck [1991, 1992] which we prefer over previous inversions of these data...
Resource Type:: Article

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: We construct a mid-latitude (30° – 60° N) reduced temperature-depth profile from a global borehole temperature database compiled for climate reconstruction. This reduced temperature profile is interpreted in terms of past surface ground temperature change and indicates warming on the order of 1°C over the past 100 to 200 years....
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Full Text:: temperatures with surface air temperatures Robert N. Harris and David S. Chapman University of Utah, Dept

Creator:: Harris, Robert N. and Chapman, David S.
Resource Type:: Article
Full Text:: temperatures" Robert N. Harris and David S. Chapman Department of Geology and Geophysics, University of Utah

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: We construct an extratropical reduced temperature–depth profile for land areas north of 20°N latitude from the global borehole temperature database compiled for climate reconstruction. The mean reduced temperature profile compares well with a time series constructed from an initial baseline temperature (0.6° ± 0.1°C) and the last 140 years of...
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Full Text:: and estimates of extratropical Northern Hemispheric warming Robert N. Harris1 and David S. Chapman

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: Temperature profiles from boreholes on the Colorado Plateau of southeastern Utah have been examined for evidence of climate change. Because these boreholes penetrate layered sedimentary rocks with different thermal conductivities, Bullard plots (temperature versus integrated thermal resistance) are used to estimate background heat flow and surface temperature intercepts. Reduced temperatures,...
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Full Text:: temperatures Robert N. Harris and David S. Chapman Department of Geology and Geophysics, University of Utah

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: Long-period ground surface temperature variations contained in borehole temperature-depth profiles form a complementary climate change record to high-frequency, but noisy surface air temperature (SAT) records at weather stations. We illustrate the benefits of jointly analyzing geothermal and meteorological data for two regions in Utah where both high-quality temperature-depth measurements and...
Resource Type:: Article

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: Temperature profiles from boreholes on the Colorado Plateau of southeastern Utah have been examined for evidence of climate change. Because these boreholes penetrate layered sedimentary rocks with different thermal conductivities, Bullard plots (Temperature versus integrated thermal resistance) are used to estimate background heat flow and surface temperature intercepts. Reduced temperatures,...
Resource Type:: Article

Creator:: Harris, Robert N. and Chapman, David S.
Abstract:: The southern portion of the Kodiak-Bowie seamonnt chain in the southeastern Gulf of Alaska presents a unique opportunity to investigate loading on young oceanic lithosphere. Oceanic lithosphere younger than 25 Ma is loaded both by sediments in a deep offshore trough and by seamount 100-200 km offshore. Free-air gravity anomaly...
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Creator:: Chapman, David S. and Harris, Robert N.
Abstract:: Temperature-depth profiles in borehole CC-I, northwestern Utah, were measured in 1978, 1990, and 1992. Borehole temperatures below 80 m depth are highly reproducible over the 14 year period indicating long term thermal stability. A slowly changing temperature field above 80 m depth has similiar characteristics to synthetic temperature profiles computed...
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Creator:: Bartlett, Marshall G., Chapman, David S., and Harris, Robert N.
Abstract:: Observations of air and ground temperatures collected between 1993 and 2004 from Emigrant Pass Geothermal Climate Observatory in northwestern Utah are analyzed to understand the relationship between these two quantities. The influence of surface air temperature (SAT), incident solar radiation, and snow cover on surface ground temperature (SGT) variations are...
Resource Type:: Article
Full Text:: University—Hawaii, Laie, Hawaii DAVID S. CHAPMAN Department of Geology and Geophysics, University of Utah

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