منابع مشابه
Upper-air model of summer balance on Mount Rainier, USA
In 2003–07 summer balance was measured at altitudes between 1700 and 3382ma.s.l. on two glaciers onMount Rainier, Washington State, USA (46.85◦N, 121.72◦W; 4400ma.s.l.): south-facing Nisqually Glacier and east-northeast-facing Emmons Glacier. Upper-air temperatures at the nearest gridpoint in the NCEP/NCAR reanalysis database are used in a distributed (over altitude) positive-degreeday (PDD) mo...
متن کاملThe Role of Crowding in Visitor Displacement at Mount Rainier and Olympic National Parks
Executive Summary One thousand telephone interviews were conducted in the six western Washington counties of Clallam, King, Kitsap, Pierce, Snohomish, and Thurston. Two research questions addressed in the telephone survey included: 1) the amount of spatial and temporal displacement due to crowding at Mount Rainier and Olympic national parks; and 2) the differences between displaced and non-disp...
متن کاملA model for the magmatic–hydrothermal system at Mount Rainier, Washington, from seismic and geochemical observations
Mount Rainier is one of the most seismically active volcanoes in the Cascade Range, with an average of one to two high-frequency volcano-tectonic (or VT) earthquakes occurring directly beneath the summit in a given month. Despite this level of seismicity, little is known about its cause. The VT earthquakes occur at a steady rate in several clusters below the inferred base of the Quaternary volc...
متن کاملA Chronology of Late Holocene Glacier Fluctuations on Mount Rainier, Washington
Lichenometric studies permit close dating for the timing of stabilization of the late Holocene moraines built by North Mowich, Carbon, Winthrop, Cowlitz, and Ohanapecosh glaciers on Mount Rainier. The moraine chronologies indicate synchronous responses among these glaciers during the past 200 yr. Periods of glacier recession began between 1768-1777, 1823-1830, 1857-1863, 1880-1885, 1902-1903, 1...
متن کاملVolcano collapse promoted by hydrothermal alteration and edifice shape, Mount Rainier, Washington
Figure 1. Extent of widespread Osceola Mudflow and Electron mudflow deposits from Mount Rainier. These deposits contain hydrothermally derived clay minerals and likely originated from flank collapses. Modified from Scott and Vallance (1995) and Vallance and Scott (1997). ABSTRACT Catastrophic collapses of steep volcano flanks threaten many populated regions, and understanding factors that promo...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1903
ISSN: 0036-8733
DOI: 10.1038/scientificamerican05231903-389