Mount St. Helens, Washington Acoustic Flow Monitors Images 2004 to Current
Current Eruption Menu Menu of Images Crater/Dome/Eruption Images Field Crews/Work Images Repeat/Annotated Images News/Media/Miscellaneous Images Acoustic Flow Monitors (AFM) Images Elk Rock AFM ... Hoala AFM ... Loowit AFM ... Information click on thumbnail for "user-friendly" medium-size image ... medium-size images are around 100 K and best for web viewing ... large-size images are 2-6 M, no logo, 200-300 dpi, 8x10 to 9x12 size, and best we have for printing ... "print ready" images are at approximately 8x10 size, dpi varies, for the printer, 2-3M, with date and logo. MEDIA NOTE --- Use "large-size" images ... they are the best resolution available ... no logo ... they are the size shot on the camera ...
Acoustic Flow Monitors
Elk Rock AFM
	MSH04_elk_rock_AFM_transport_to_site_10-25-04.jpg USGS scientist, Kurt Spicer, transports the Elk Rock AFM station to its location. USGS photograph taken on October 25, 2004, by Dennis Saunders. [medium size] ... [large size]
	MSH04_elk_rock_AFM_station_in_place_10-25-04.jpg Elk Rock AFM station. USGS photograph taken on October 25, 2004, by Kurt Spicer. [medium size] ... [large size]
	MSH04_elk_rock_AFM_station_10-25-04.jpg Elk Rock AFM station. USGS photograph taken on October 25, 2004, by Kurt Spicer. [medium size] ... [large size]
	MSH04_elk_rock_AFM_station_location_10-25-04.jpg Elk Rock AFM station. USGS photograph taken on October 25, 2004, by Kurt Spicer. [medium size] ... [large size]
Hoala AFM
	MSH04_hoala_AFM_station_11-05-04.jpg Hoala AFM station (Acoustic Flow Monitor). USGS photograph taken on November 5, 2004, by Tom Hale. [medium size] ... [large size]
	MSH04_hoala_AFM_USGS_scientist_msh_11-05-04.jpg Hoala AFM station (Acoustic Flow Monitor). USGS photograph taken on November 5, 2004, by Tom Hale. [medium size] ... [large size]
	MSH04_hoala_AFM_inside_view_11-05-04.jpg Hoala AFM station (Acoustic Flow Monitor). USGS photograph taken on November 5, 2004, by Tom Hale. [medium size] ... [large size]
Loowit AFM
August 26, 2005
	MSH05_loowit_falls_and_gagehouse_08-26-05.jpg Loowit Falls, with U.S. Geological Survey Gage House (upper right). Loowit Gage houses an Acoustic Flow Monitor (AFM). USGS Photograph taken on August 26, 2005 by Kurt Spicer. [medium size] ... [large size]
	MSH05_aerial_loowit_gagehouse_08-26-05.jpg Aerial view, Loowit Gage House. USGS Photograph taken on August 26, 2005 by Kurt Spicer. [medium size] ... [large size]
2004
	MSH04_aerial_loowit_falls_AFM_station_8-30-04.jpg Aerial view, Loowit Falls and the Loowit AFM station (Acoustic Flow Monitor, in yellow circle on right), as seen through helicopter window. Mount St. Helens' lava dome is visible in the background below rim of the crater. Circular smudges are dirty helicopter window, and lower center is window glare. USGS photograph taken on August 30, 2004, by Kurt Spicer. [medium size] ... [large size]
	MSH04_loowit_AFM_and_precip_station_8-30-04.jpg Loowit AFM station (Acoustic Flow Monitor, in housing center) and precipitation gage (on right), looking upstream towards Mount St. Helens' crater. Birm from a 1997 lahar is visible along the channel. Mount St. Helens' east crater wall is visible in the background. USGS photograph taken on August 30, 2004, by Kurt Spicer. [medium size] ... [large size]
	MSH04_loowit_AFM_signal_10-05-04_to_10-06-04_med.jpg Example of Loowit AFM signal -- small lahar from early morning October 6, 2004. [medium size]
	MSH04_aerial_crater_steps_from_north_10-06-04.jpg View of Mount St. Helens crater and the Sasquach Steps as seen from the north. The dark "muddy" looking area in the right foreground is old erosional debris flows from Step Channel (on right) over the years. The lighter ribbon of grey to the left of the darker area is a lahar from Loowit Channel from early morning of October 6, 2004. The yellowish-green color on the surface is plant growth. USGS Photograph taken on 6 October 2004 by John Pallister. [medium size] ... [large size]
	MSH04_aerial_step_and_loowit_channels_10-06-04.jpg Aerial view from the crater mouth looking downstream at Step (left) and Loowit (right) channels. The lighter grey from Loowit Channel is the lahar of early morning, October 6, 2004. Step Channel and Loowit Channel merge on the Pumice Plain. Spirit Lake is visible on the upper right. The yellowish-green color on the surface is plant growth. USGS Photograph taken on 6 October 2004 by John Pallister. [medium size] ... [large size]
	MSH04_loowit_channel_after_debris_flow_10-06-04.jpg Loowit Channel with lahar of October 6, 2004, with the Step Channel visible on the right. The yellowish-green color on the surface is plant growth. USGS Photograph taken on 6 October 2004 by John Pallister. [medium size] ... [large size]
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