Tuesday, May 1, 2012

AVHRR MIR - Kamchatka - May 1, 2012 08:59 UTC

Here is an example of the quality of Mid Infrared (3.75 micron) data from May 1, 2012 across Kamchatka Peninsula as collected and processed at Geophysical Institute and Geographical Network of Alaska, both at University of Alaska Fairbanks.


This data can be used for tracking thermal signals from any ground based volcano processes. Increased thermal radiance at 3.7 5 microns will occur for small hot targets. The GI at UAF has built thermal alarms from this data to provide alerts of any increased thermal activity to those within the remote sensing group of the Alaska Volcano Observatory (AVO). The Alaska Volcano Observatory (AVO) is a joint program of the United States Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS). 

In this image, Kizimen volcano shows an elevated temperature of 5.59 C on a background of -2.1 C, so around 8 C above background. Note this is an average temperature of 6 C at 3.75 microns for a 1.1 x 1.1 km. Within this pixel, a smaller hot target likely exists and this has elevated the overal temperature to 8 C above the background cooler surface.


Bezymianny Sector MIR at 3.75 microns. Yellow circles represent the color coded volcanoes. Select the circle for Kizimen will display the 40 x 40 region around the volcano, see below


40 x 40 region around Kizimen Volcano for 08:59 UTC on May 1, 2012. Elevated pixels at 5.59 C in MIR shown by grayscale data, white = higher; black = lower. This data be viewed online at anytime

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