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Proceedings Paper

LWIR spectral measurements of volcanic sulfur dioxide plumes
Author(s): Aimee Gail Mares; Richard Christopher Olsen; Paul G. Lucey
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Paper Abstract

This work examines the process of detecting and quantifying volcanic SO2 plumes using the Airborne Hyperspectral Infrared Imager (AHI) developed by the University of Hawaii. AHI was flown over Pu'u'O'o Vent of Kilauea Volcano in Hawaii to collect data on SO2 plumes. AHI is a LWIR pushbroom imager sensitive to the 7.5 - 11.5 μ region. Spectral analysis and mapping tools were used to identify and classify the SO2 plume in both radiance and emissive space. MODTRAN was used to model the radiance observed by the sensor as it looked to the ground through an SO2 plume. A spectral library of radiance profiles with varying ground surface temperatures and SO2 concentrations was developed, and the AHI data fitted to the varying model profiles. Reasonable values of SO2 emission were obtained.

Paper Details

Date Published: 12 August 2004
PDF: 7 pages
Proc. SPIE 5425, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X, (12 August 2004); doi: 10.1117/12.540949
Show Author Affiliations
Aimee Gail Mares, Naval Postgraduate School (United States)
Richard Christopher Olsen, Naval Postgraduate School (United States)
Paul G. Lucey, Univ. of Hawaii/Manoa (United States)

Published in SPIE Proceedings Vol. 5425:
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery X
Sylvia S. Shen; Paul E. Lewis, Editor(s)

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