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Observations of volcanic emissions u...

Thomas, Helen E.

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Observations of volcanic emissions using satellite remote sensing .

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Observations of volcanic emissions using satellite remote sensing ./
作者:	Thomas, Helen E.
面頁冊數:	155 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-07, Section: B, page: .
Contained By:	Dissertation Abstracts International72-07B.
標題:	Geography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3454112
ISBN:	9781124629070

Observations of volcanic emissions using satellite remote sensing .
Thomas, Helen E.

Observations of volcanic emissions using satellite remote sensing . - 155 p.

Source: Dissertation Abstracts International, Volume: 72-07, Section: B, page: .

Thesis (Ph.D.)--Michigan Technological University, 2011.

Volcanoes pose a threat to the human population at regional and global scales and so efficient monitoring is essential in order to effectively manage and mitigate the risks that they pose. Volcano monitoring from space has been possible for over thirty years and now, more than ever, a suite of instruments exists with the capability to observe emissions of gas and ash from a unique perspective. The goal of this research is to demonstrate the use of a range of satellite-based sensors in order to detect and quantify volcanic sulphur dioxide, and to assess the relative performances of each sensor against one another. Such comparisons are important in order to standardise retrievals and permit better estimations of the global contribution of sulphur dioxide to the atmosphere from volcanoes for climate modelling.

ISBN: 9781124629070Subjects--Topical Terms:

524010
Geography.

Observations of volcanic emissions using satellite remote sensing .
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245 1 0 $a Observations of volcanic emissions using satellite remote sensing .
300 $a 155 p.
500 $a Source: Dissertation Abstracts International, Volume: 72-07, Section: B, page: .
500 $a Advisers: Matthew Watson; Simon A. Carn.
502 $a Thesis (Ph.D.)--Michigan Technological University, 2011.
520 $a Volcanoes pose a threat to the human population at regional and global scales and so efficient monitoring is essential in order to effectively manage and mitigate the risks that they pose. Volcano monitoring from space has been possible for over thirty years and now, more than ever, a suite of instruments exists with the capability to observe emissions of gas and ash from a unique perspective. The goal of this research is to demonstrate the use of a range of satellite-based sensors in order to detect and quantify volcanic sulphur dioxide, and to assess the relative performances of each sensor against one another. Such comparisons are important in order to standardise retrievals and permit better estimations of the global contribution of sulphur dioxide to the atmosphere from volcanoes for climate modelling.
520 $a In this work, retrievals of volcanic sulphur dioxide from a number of instruments are compared, and the individual performances at quantifying emissions from large, explosive volcanic eruptions are assessed. Retrievals vary widely from sensor to sensor, and often the use of a number of sensors in synergy can provide the most complete picture, rather than just one instrument alone.
520 $a Volcanic emissions have the ability to result significant economic loses by grounding aircraft due to the high risk associated with ash encountering aircraft. As sulphur dioxide is often easier to measure than ash, it is often used as a proxy. This work examines whether this is a reasonable assumption, using the Icelandic eruption in early 2010 as a case study. Results indicate that although the two species are for the most part collocated, separation can occur under some conditions, meaning that it is essential to accurately measure both species in order to provide effective hazard mitigation.
520 $a Finally, the usefulness of satellite remote sensing in quantifying the passive degassing from Turrialba, Costa Rica is demonstrated. The increase in activity from 2005 - 2010 can be observed in satellite data prior to the phreatic phase of early 2010, and can therefore potentially provide a useful indication of changing activity at some volcanoes.
590 $a School code: 0129.
650 4 $a Geography. $3 524010
650 4 $a Geology. $3 516570
650 4 $a Remote Sensing. $3 1018559
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710 2 $a Michigan Technological University. $b Geological/Mining Engineering & Sciences. $3 1019568
773 0 $t Dissertation Abstracts International $g 72-07B.
790 1 0 $a Watson, Matthew, $e advisor
790 1 0 $a Carn, Simon A., $e advisor
790 1 0 $a Shannon, Jeremy $e committee member
790 1 0 $a Webley, Peter W. $e committee member
790 $a 0129
791 $a Ph.D.
792 $a 2011
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3454112