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Full-Text Articles in Earth Sciences
The Recent Climate Record: What It Can And Cannot Tell Us, Thomas R. Karl, J. Dan Tarpley, Robert G. Quayle, Henry F. Diaz, David A. Robinson, Raymond S. Bradley
The Recent Climate Record: What It Can And Cannot Tell Us, Thomas R. Karl, J. Dan Tarpley, Robert G. Quayle, Henry F. Diaz, David A. Robinson, Raymond S. Bradley
Raymond S Bradley
While a great deal of climate data have been gathered over the past hundred years, there remains a number of problems limiting our ability to fully utilize these data in reconstructing the climate of the past century. This is particularly true for research demanding high precision and/or detailed local or regional-scale climate analyses. In this review we consider our ability to quantify climate change with respect to near-surface air temperature (measured 1.25-2 m above ground), sea surface temperature, .precipitation, snow cover, sea ice, and vegetation measured from space and the Earth's surface. Among the data issues we discuss are calibration, …
Precipitation Fluctuations Over Global Land Areas Since The Late 1800'S, Henry F. Diaz, Raymond S. Bradley, J. K. Eischeid
Precipitation Fluctuations Over Global Land Areas Since The Late 1800'S, Henry F. Diaz, Raymond S. Bradley, J. K. Eischeid
Raymond S Bradley
An analysis of southern hemisphere land precipitation records for the last 100 years indicates an increase in mean annual precipitation since the 1940's, with positive anomalies, compared to the 1921 - 1960 reference period, occurring during approximately the last 15 years in all seasons except southern summer (December-February). There is little or no temporal correlation with corresponding precipitation indices for the northern hemisphere (Bradley et aI., 1987a). Furthermore, while trends in the northern hemisphere temperate regions were opp'osite those in the northern tropical areas, in the southern hemisphere both zones exhibit similar trends. The change toward higher precipitation in middle …
Surficial Geologic Map Of The East Cache Fault Zone, Cache County, Utah, James P. Mccalpin
Surficial Geologic Map Of The East Cache Fault Zone, Cache County, Utah, James P. Mccalpin
James P. McCalpin
The 1:50,000-scale map shows surficial geologic deposits and the faults that displace them along the East Cache fault zone in northern Utah. The East Cache fault is a north-trending normal fault that extends about 77 km along the eastern side of Cache Valley (an east-tilted graben) at the base of the Bear River Range. The map includes a description of Quaternary deposits along the fault zone, a description of the fault segments, and estimates of the age, size, and distribution of fault scarps in the fault zone.
Relative Sea Level Chronology Determined From Raised Marine Sediments And Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada, Michael J. Retelle, Raymond S. Bradley, Robert Stuckenrath
Relative Sea Level Chronology Determined From Raised Marine Sediments And Coastal Isolation Basins, Northeastern Ellesmere Island, Arctic Canada, Michael J. Retelle, Raymond S. Bradley, Robert Stuckenrath
Raymond S Bradley
A new relative sea level curve for the Robeson Channel area contrasts with previously published curves for the area by inferring that rapid emergence may have commenced at ca. 7400 BP, as much as 1200 yr earlier than previously predicted. Subsequently, uplift may have occurred at much lower rates from ca. 6000 BP to present. A comparison of shell dates used for the relative sea level curve and dates on disseminated total organic carbon (TOC) fractiop from lacustrine and marine sediments from sediment cores from emerged coastal lakes shows wide discrepancies. Furthermore, several inifmite TOC dates (>27,7SO to >40,600 …