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| Haiti Earthquake
Area of Léogane, risk estimate of the propagation of mosquitoes
(Aedes aegypti) spreading the dengue fever
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An earthquake of magnitude 7.3 on the Richter scale occurred in Haiti on
January 12th at 16:53 hrs, local time. Numerous buildings, that
could have been used as shelters, were completely destroyed or badly damaged.
With the rainy season approaching, a dengue epidemic threatens the population
that is already weakened and greatly disturbed by the disaster. Dengue, a
potentially deadly viral infection, is transmitted to humans via a mosquito (Aedes
aegypti) the larvae of which grow in stagnant waters and spread in
urban and semi-urban environments. A Landsat-7 image (2005) merged with a
RADARSAT-2 image, acquired on January 20th, 2010, allow us to map
land cover and get an appreciation of the terrain’s topography, which in turn
facilitate the identification of potential dengue-propagation sites.
Environments that are particularly prone to larvae hatching include rivers and
river beds, urban/peri-urban areas and particularly dumps and, to a certain
extent, forests.
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| High res. |
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High risk
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Potential risk
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Limited risk
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Weak risk
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Background : RADARSAT-2 Spotlignt
Beam SLA12 (HH), January 20th, 2010
(See: Background: Fusion between
Landsat-7 (2005) and RADARSAT-2 Spotlight Beam SLA12 (HH), January 20th, 2010) |
| RADARSAT-2 Data and Products © MacDonald, Dettwiler and
Associates Ltd. (2010) – All Rights Reserved, RADARSAT is an official trademark
of the Canadian Space Agency. This disaster management product was developed by
the Canadian company VIASAT GeoTechnologies, with the support of the Canadian
Space Agency (CSA) Earth Observation Applications and Utilizations (EOAU)
Division. |
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| See: Haiti Earthquake, Port-au-Prince, the day
after the earthquake of January 12th, 2010 (image GeoEye)
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| See: Haiti Earthquake, Port-au-Prince, Jacmel and Léogane, a few days after the earthquake of January 12th, 2010 (images RADARSAT-2) |
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