Mt. Pinatubo ash cloud (134 kB, 487x398)
Huge 8-bit GIF (457 kB, 975x797)
Huge 24-bit JPEG (1.21 MB, 975x797)
This image shows the ash cloud from Mt Pinatubo in the Phillipines about 3 hours before the volcano's cataclysimic eruption (image taken 15 June 1991 at 7:30 am local time). The ash cloud is intermixed with Typhoon Yunya.
The image was derived from NOAA (National Oceanic and Atmospheric Administration) AVHRR (Advanced Very High Resolution Radiometer) satellite data by F. Hasler, H. Pierce, K. Palaniappan and M. Manyin (NASA Goddard). The red, green and blue colors represent observations at 0.65, 0.9, and 11 microns, respectively.
The VolcanoWorld project will bring volcano remote sensing data to classrooms and national parks and monuments. Additional information on the use of satellite remote sensing to study volcanoes may be found on the EOS Volcanology web.