Filters: Tags: Mount St. Helens Collection (X) > Date Range: {"choice":"year"} (X)
25 results (55ms)|
Filters
Date Types (for Date Range)
Contacts
Categories Tag Types Tag Schemes |
Album caption: Thermal infrared images of Mount St. Helens obtained prior to 1980 eruption sequence, showing the two historic thermal areas. Image shows thermal area A, a small area of weak fumarolic activity at The Boot, on north flank at 2,740 m (9,000 ft) elevation. On this late-summer morning, instruments were set to depict two levels of background heat emission - glaciers and few remaining snow patches as cold, and snow-free ground as warm. Skamania County, Washington. August 7, 1971. Published as figure 147-A in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Mount St. Helens Collection,
Photographers,
Skamania County, Washington,
U.S. Army Collection,
Volcanoes,
Album caption: Section along axis of May 18, 1980, tephra deposit. Below the knife is several inches(centimeters) of material deposited by the lateral blast; above the knife is more than 6 in (15 cm) of ash and lanpilli deposited during the morning of May 18, 1980(see fig. 22) overlying these layers are coarse lapilli from the July 2, 1980, eruption.
Aerial view looking east across the thickest part of the debris avalanche deposit in the North Fork Toutle River. This location is about 1 mile downstream from Spirit Lake. Skamania County, Washington. May 23, 1980. Figure 4 in U.S. Geological Survey. Circular 850-B. 1981.
View to east of Mount St. Helens debris avalanche from distal margin, in valley of North Fork Toutle River. Cowlitz County, Washington. July 15, 1980. Figure 461, U.S. Geological Survey Professional paper 1250.
Categories: Image;
Tags: Cowlitz County, Washington,
Mount St. Helens Collection,
Volcanoes,
photo print
Album caption: Computer-generated shaded-relief images of filtered digital terrain models of Mount St. Helens. Data were filtered by averaging pixel values over 3 x 3 areas. Increased uncertainty of contour location within snowfields appears as terraces (in southeast) and crevasses (in northwest). B. Model from photographs of May 12 and 16, 1980. Small discontinuity just south of Dogs Head is an artifact of the join between May 12 and day 16 digital terrain models. Skamania County, Washington. May 16, 1980. Published as figure 79-B in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Mount St. Helens Collection,
Pevears, D.R. Collection,
Photographers,
Skamania County, Washington,
Volcanoes,
Album caption: Computer-generated elevation-difference images of Mount St. Helens produced by subtraction of digital terrain models. A. April 11,1980 minus August 5, 1972. Shows development of north peak 1. Skamania County, Washington. n.d. Published as figure 81-A in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Mount St. Helens Collection,
Skamania County, Washington,
Volcanoes,
photo print
Album caption: Scanning electron microscope images of pumiceous material from the May 18, 1980 eruption. B. Interior of pumice clast collected at a depth of 60 cm in a May pyroclastic flow. Temperature of sample when collected was 260°C. Unidentified acicular mineral contains sodium and magnesium. Skamania County, Washington. October 15, 1980. Published as figure 385-B in U.S. Geological Survey. Professional paper 1250. 1981. Handwritten notes on album caption: (Photo by D.R. Pevear) Index card unavailable.
Categories: Image;
Tags: Mount St. Helens Collection,
Pevears, D.R. Collection,
Photographers,
Skamania County, Washington,
Volcanoes,
Ice avalanche from Leshi Glacier traveled over top of north side of Sugar Bowl, Mount St. Helens. Skamania County, Washington. May 17, 1980.
Categories: Image;
Tags: Glaciers,
Leshi Glacier,
Miller, C.D. Collection,
Mount St. Helens Collection,
Photographers,
Slide description and index card: Aerial views of the Mount St. Helens crater and eruptions from the north and northwest. C, These phreatic eruptions seemed to grow in slow motion because of the immensity of the scene. Some were powerful enough to throw out automibile-sized blocks of rock and ice. Skamania County, Washington. April 10, 1980. (Photo by John Whetten). Published as Figure 14-C in U.S. Geological Survey. Professional Paper 1249. 1982.
Mount St. Helens Eruption. May 30, 1980.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Hamilton, R. Collection,
Mount St. Helens Collection,
Photographers,
Skamania County, Washington,
photo print
View down (west) North Fork Toutle River of Mount St. Helens debris avalanche deposit. Cowlitz County, Washington. May 20, 1980.
Categories: Image;
Tags: Cowlitz County, Washington,
Miller, C.D. Collection,
Mount St. Helens Collection,
Photographers,
Volcanoes,
Album caption: Exposed section of fan at confluence of Smith Creek and Muddy River at stop 5. Section consists of summit- dome material of the Kalama eruptive period of Mullineaux(1986) overlain by 5 ft(1.5) of May 1980 deposit.
Index card: Geologists at theodolite station at Timberline Viewpoint. Mount St. Helens in the background, with bulge especially prominent. Skamania County, Washington. May 1/2, 1980. Published as Figure 83 in U.S. Geological Survey. Professional Paper 1250. 1981.
Devastated area in the valley of the North Toutle River showing deforestation, reordered drainage, and the surface of debris flow and blast deposits resulting from the eruption of Mount St. Helens. View looking south shows volcano no and amphitheater in background. Photo by C. Dan Miller. Skamania County, Washington. 1980. Published as lower photo, p. 15 in U.S. Geological Survey. Yearbook. 1980.
Categories: Image;
Tags: Miller, C.D. Collection,
Mount St. Helens Collection,
Photographers,
Skamania County, Washington,
Volcanoes,
Album caption: Thermal infrared images of Mount St. Helens summit area obtained by U.S. Army at approximately 2300 on March 30, 1980. Thermal feature E is a topographic prominence and may result from solar heating. There are large-scale distortions in these images. B. View of upper north flank showing heating within major fractures near The Boot (fracture D and fracture through area A). In this image, observations near The Boot were approximately perpendicular to the local surface. Skamania County, Washington. March 30, 1980. (Indicator lines, arrow and letters on published photo only) Portion published as figure 151-B in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
Categories: Image;
Tags: Mount St. Helens Collection,
Photographers,
Skamania County, Washington,
U.S. Army Collection,
Volcanoes,
Album caption: Scanning electron microscope (SEM) images of pumiceous material from the May 18,1980 eruption. A. Interior of pumice clast collected in Yakima on May 18. (Photo by D.R. Pevear) Yakima County, Washington. May 18, 1980. Published as figure 385-A in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Mount St. Helens Collection,
Pevears, D.R. Collection,
Photographers,
Volcanoes,
Yakima County, Washington,
Slide description and index card: Aerial view of the Mount St. Helens crater and eruptions from the north and northwest. E, By April 10, eruptions were coming from a single circular vent (shown by an arrow on published photo only) in the lowest part of the crater and almost directly below the position of the crater first seen on March 29. Traces of what probably was another, but now-dormant, vent can be seen to the right of the active vent, here steaming weakly. The active vent was about 30 feet across. Skamania County, Washington. April 10, 1980. (Photo by John Whetten). Published as Figure 14-E in U.S. Geological Survey. Professional Paper 1249. 1982.
Album caption: Computer-generated shaded-relief images of filtered digital terrain models of Mount St. Helens. Data were filtered by averaging pixel values over 3 x 3 areas. Increased uncertainty of contour location within snowfields appears as terraces (in southeast) and crevasses (in northwest). A. Model from photographs of August 5, 1972. Skamania County, Washington. August 5, 1972. Portion published as figure 79-A in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Mount St. Helens Collection,
Pevears, D.R. Collection,
Photographers,
Skamania County, Washington,
Volcanoes,
Album caption: North Fork Toutle River blockage at stop 22. Here, red fractured rock of avalanche depoist underlies blast deposit and pumiceous surge deposit from secondary phreatic explosions on the Pumice Plain. In foreground are pumiceous pyroclastic-flow deposits of June 12, 1980; in surrounding middle ground is artificial fill at one of the critical points in the spirit Lake blockage; in the background are light-colored ash-cloud deposits overlying the avalanche runup, where the avalanche crossed over Johnston Ridge into South Coldwater Creek drainage basin. Dashed and dotted lines indicate approximate boundaries. View northward.
Slide description and index card: Aerial view of the Mount St. Helens crater and eruptions from the north and northwest. D, A moderate-sized eruption cloud obscured the crater as steam and ash drifted eastward. Skamania County, Washington. April 10, 1980. (Photo by John Whetten). Published as Figure 14-D in U.S. Geological Survey. Professional Paper 1249. 1982.
|
|
