Midlands State University Library

Visualizing and quantifying the movement of vegetative drought using remote-sensing data and GIS (Record no. 160667)

MARC details
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fixed length control field 02608nam a22002417a 4500
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control field ZW-GwMSU
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control field 20221129143053.0
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fixed length control field 221129b |||||||| |||| 00| 0 eng d
040 ## - CATALOGING SOURCE
Original cataloging agency MSU
Transcribing agency MSU
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100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Rulinda, Coco M
Relator term author
245 ## - TITLE STATEMENT
Title Visualizing and quantifying the movement of vegetative drought using remote-sensing data and GIS
Statement of responsibility, etc. created by Coco M. Rulinda ,Alfred Stein &Ulan D. Turdukulov
264 ## - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE
Place of production, publication, distribution, manufacture Netherlands:
Name of producer, publisher, distributor, manufacturer Taylor & Francis,
Date of production, publication, distribution, manufacture, or copyright notice 2013.
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Content type term text
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337 ## - MEDIA TYPE
Source rdamedia
Media type term unmediated
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440 ## - SERIES STATEMENT/ADDED ENTRY--TITLE
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520 ## - SUMMARY, ETC.
Summary, etc. Remote-sensing-based drought monitoring methods provide fast and useful information for a sustainable management strategy of drought impact over a region. Common pixel-based monitoring methods are limited in the analysis of the dynamics of this impact at regional scale. For instance, these hardly allow us to quantify the movement of drought in space and time and to compare drought with rainfall deficits without losing the variability of these events within a region. This study proposed an object-based approach that allowed us to visualize and quantify the spatio-temporal movement of drought impact on vegetation, called vegetative drought, in a region. The GIS software Dynomap was used to extract and track objects. Measures of distance and angle were used for determining the speed and direction of vegetative drought and rainfall deficit objects, calculated from the National Oceanic and Atmospheric Administration's (NOAA's) normalized difference vegetation index and rainfall estimates data. The methods were applied to the two rainy seasons during the drought year 1999 in East Africa. Results showed that vegetative drought objects moved into the southwestern direction at an average angle of −138.5° during the first season and −144.5° during the second season. The speed of objects varied between 38 km dekad−1 and 185 km dekad−1 during the first season and between 33 km dekad−1 and 144 km dekad−1 during the second season, reflecting the rate of spread between dekads. Vegetative drought objects close to rainfall deficit objects showed similar trajectories and sometimes regions overlapped. This indicated that the two events are related. We conclude that a spatiotemporal relationship existed between the two types of events and that this could be quantified.<br/><br/>
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element drought
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Topical term or geographic name entry element trajectories
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element spatio-temporal objects
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier https://doi.org/10.1080/13658816.2012.723712
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Library of Congress Classification
Koha item type Journal Article
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Home library Current library Shelving location Date acquired Serial Enumeration / chronology Total Checkouts Full call number Date last seen Copy number Price effective from Koha item type Public note
    Library of Congress Classification     Main Library Main Library - Special Collections 14/10/2014 Vol 27 .Nos 7-8 pages 1481-1496   G70.2 INT 29/11/2022 SP17852 29/11/2022 Journal Article For Inhouse use only