Show simple item record

dc.contributor.authorKearney, Courtney
dc.date.accessioned2015-09-22T21:07:26Z
dc.date.available2015-09-22T21:07:26Z
dc.date.issued2005-08
dc.identifier.urihttp://hdl.handle.net/11122/6012
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2005en_US
dc.description.abstractThis study investigates the detection of volcanic SO₂ using TIR satellite-based and UV ground-based measurements at volcanoes in the North Pacific during eruptions and low level degassing. The ASTER and MODIS sensors with spatial resolutions of 0.09 and 1.0 km, respectively, are used to quantify SO₂ from the 8.6 um absorption feature of the gas species. Three volcanoes within this region were studied: Mt. Cleveland to test the implementation of the MAP ̲SO2 software, Bezymianny to determine the sensitivity of the algorithm to input parameters during eruption conditions, and Shishaldin to evaluate the detection of SO₂ during low level degassing. Total SO₂ estimates from the January 2004 Bezymianny eruption range from 15.5 kt to 87.2 kt at 0210 UTC depending on the input parameters. An emission rate of 0.295 kt·min⁻¹ and transport rate of 16.6 m·s⁻¹ were estimated from time sequential MODIS passes. SO₂ flux estimates at Shishaldin Volcano on 26 May 2004 were 164 t·day⁻¹ from ASTER and 58 t·day⁻¹ on 31 July 2004 from MUSe. The data show that SO₂ during low level degassing and eruptive conditions can be detected in the region and the sensors from this study provide a detection continuum from low to high SO₂ concentrations.en_US
dc.language.isoen_USen_US
dc.titleDetection of volcanic SO₂ in the North Pacific Region using ASTER and MODISen_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentDepartment of Geology and Geophysicsen_US
refterms.dateFOA2020-03-05T08:55:59Z


Files in this item

Thumbnail
Name:
Kearney_C_2005.pdf
Size:
95.69Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record