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| Titel |
Social media as an information source for rapid flood inundation mapping |
| VerfasserIn |
J. Fohringer, D. Dransch, H. Kreibich, K. Schröter |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 12 ; Nr. 15, no. 12 (2015-12-21), S.2725-2738 |
| Datensatznummer |
250119825
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| Publikation (Nr.) |
 copernicus.org/nhess-15-2725-2015.pdf |
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| Zusammenfassung |
| During and shortly after a disaster, data about the hazard and its
consequences are scarce and not readily available. Information provided by
eyewitnesses via social media is a valuable information source, which should
be explored in a~more effective way. This research proposes a methodology
that leverages social media content to support rapid inundation mapping,
including inundation extent and water depth in the case of floods. The
novelty of this approach is the utilization of quantitative data that are
derived from photos from eyewitnesses extracted from social media posts and
their integration with established data. Due to the rapid availability of
these posts compared to traditional data sources such as remote sensing data,
areas affected by a flood, for example, can be determined quickly. The
challenge is to filter the large number of posts to a manageable amount of
potentially useful inundation-related information, as well as to interpret
and integrate the posts into mapping procedures in a timely manner. To
support rapid inundation mapping we propose a methodology and develop
"PostDistiller", a tool to filter geolocated posts from social media
services which include links to photos. This spatial distributed
contextualized in situ information is further explored manually. In an
application case study during the June 2013 flood in central Europe we
evaluate the utilization of this approach to infer spatial flood patterns and
inundation depths in the city of Dresden. |
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