東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Tracking a wildfire in areas of high...

Klein, Korey Robert.

Linked to FindBook

Google Book

Amazon

博客來

Tracking a wildfire in areas of high relief using volunteered geographic information: A viewshed application.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Tracking a wildfire in areas of high relief using volunteered geographic information: A viewshed application./
Author:	Klein, Korey Robert.
Description:	47 p.
Notes:	Source: Masters Abstracts International, Volume: 52-06.
Contained By:	Masters Abstracts International52-06(E).
Subject:	Geodesy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1556205
ISBN:	9781303910111

Tracking a wildfire in areas of high relief using volunteered geographic information: A viewshed application.
Klein, Korey Robert.

Tracking a wildfire in areas of high relief using volunteered geographic information: A viewshed application. - 47 p.

Source: Masters Abstracts International, Volume: 52-06.

Thesis (M.S.)--The University of Utah, 2014.

This item must not be sold to any third party vendors.

During rapid-onset disasters, timely dissemination of warning information to the public is crucial. Official emergency information channels are often slow, leaving the public to monitor social media websites for more timely updates. Examining Twitter communications, or tweets, sent during the 2012 Waldo Canyon Fire, this research seeks to determine what level of descriptive information is sent through Twitter during a wildfire, whether or not that information can inform other users of changes in fire activity, and how the spatial and temporal information within a tweet can be used in conjunction with geographic information systems (GIS) to determine fire location and activity.

ISBN: 9781303910111Subjects--Topical Terms:

550741
Geodesy.

Tracking a wildfire in areas of high relief using volunteered geographic information: A viewshed application.
LDR:02910nmm a2200349 4500 001 2056777
005 20150608133909.5
008 170521s2014 ||||||||||||||||| ||eng d
020 $a 9781303910111
035 $a (MiAaPQ)AAI1556205
035 $a AAI1556205
040 $a MiAaPQ $c MiAaPQ
100 1 $a Klein, Korey Robert. $3 3170556
245 1 0 $a Tracking a wildfire in areas of high relief using volunteered geographic information: A viewshed application.
300 $a 47 p.
500 $a Source: Masters Abstracts International, Volume: 52-06.
500 $a Adviser: Thomas J. Cova.
502 $a Thesis (M.S.)--The University of Utah, 2014.
506 $a This item must not be sold to any third party vendors.
520 $a During rapid-onset disasters, timely dissemination of warning information to the public is crucial. Official emergency information channels are often slow, leaving the public to monitor social media websites for more timely updates. Examining Twitter communications, or tweets, sent during the 2012 Waldo Canyon Fire, this research seeks to determine what level of descriptive information is sent through Twitter during a wildfire, whether or not that information can inform other users of changes in fire activity, and how the spatial and temporal information within a tweet can be used in conjunction with geographic information systems (GIS) to determine fire location and activity.
520 $a This research utilized geotagged tweets and viewshed analysis in GIS as a means of determining what portions of the wildfire are visible from each Twitter user. These visible areas, or viewsheds, were then overlapped with viewsheds from other users to generate shared viewsheds. Both individual and shared viewsheds were compared to the area of new fire growth to determine if burning areas could be more confidently identified by considering different user perspectives.
520 $a The shared viewshed method showed that while increasing the number of observations does result in a decrease in shared visible area, the portion of the shared viewshed that falls within the fire boundary significantly increases. Many groupings, which were compiled based on time sent and ranged in size from two to eight tweets, could see more than 20% of the fire.
520 $a This research found that there is the potential for users to inform one another of changes in fire activity that may not be visible from different points of view. The addition of viewshed analysis adds another layer of valuable information to the tweets and could be useful if done in real-time, especially during events occurring at a smaller scale.
590 $a School code: 0240.
650 4 $a Geodesy. $3 550741
650 4 $a Geography. $3 524010
650 4 $a Physical Geography. $3 893400
650 4 $a Web Studies. $3 1026830
690 $a 0370
690 $a 0366
690 $a 0368
690 $a 0646
710 2 $a The University of Utah. $b Geography. $3 2100130
773 0 $t Masters Abstracts International $g 52-06(E).
790 $a 0240
791 $a M.S.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1556205