This document discusses e-GEOS Emergency Mapping Service's response to emergency events by exploiting open data and COSMO-SkyMed satellite imagery. The service provides reference maps within 6 hours of activation and damage assessment maps within 3 hours of satellite data availability. Key challenges addressed are quick access to open geodata for reference maps and crisis data for post-event maps. The workflow involves checking satellite tasking opportunities, downloading open data, preparing reference maps, processing imagery, analyzing changes to prepare crisis maps. e-GEOS' Geodata Toolkit provides a single access point to heterogeneous open geospatial data to generate detailed base maps in under 30 minutes. An example response to the 2013 Oklahoma tornado is presented.
2. e-GEOS Emergency Mapping Service
e-GEOS Emergency Mapping Service is the set of
– hardware and software resources
– human resources (25 engineers on shift)
– procedures
e-GEOS Emergency
Management Center
devoted to a rapid and effective response to emergency requests
exploiting Optical and SAR satellite information.
The Service is available 24/7/365
Emergency Activities:
Satellite tasking
Image analysis and map production
News monitoring to anticipate sat.
tasking
Procedures review and training
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Maintenance of reference geodatabase 2
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3. Emergency Mapping Service – Products / Events
Floods
Earthquakes
Reference Maps
Pre event situation
Delivery time: 6 hours after activation
Humanitarian crisis
Damage Assessment Maps
Post event situation
Delivery time: 3 hours after EO data avail.
Fires
Oil spill / Ship detection
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4. Key challenges for Emergency Response
• Quick access to available OpenGeoData for pre event
situation maps
– Catalogues and data harmonization is a key task
– Standard symbolysm and data structure
• OpenGeoData refinement and gap filling
– Well trained staff available on shift 24/7 is a key asset
• Quick access to crisis data for post event situation maps:
– COSMO-SkyMed: best revisit time and high suitability for flood
mapping and change detection
– Other satellite data: for selected types of disaster
– Open Data (including social data): complementing the crisis
mapping from remote sensed data
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5. Operational workflow
EVENT
Who (User) - What (Event type) - Where (AOI) – When (Event time)
1
Check first available
satellite acquisition
opportunity and task it
3
2
Download available open data
Prepare Reference map
Geodata Toolkit
SAVOIR
4
Post event basic image processing
(geometric / radiometric)
ArcGIS
7
Prepare Crisis map
ERDAS
ENVI + Sarscape
5
ArcGIS
Thematic image processing
(depending on event type)
FLOOD
MTC
TEMAS
6
Further vector editing /
Spatial analysis
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ArcGIS
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6. e-GEOS Geodata Toolkit
It is the proprietary solution that provides a simple single entry point to access
harmonized heterogeneous geospatial data resources with local or global
coverage to be further used in other applications.
e-GEOS Geodata Toolkit can be used to quickly retrieve over a specific AOI:
– base vector layers (OSM, Geonames, GADM, GAUL, Wikimapia, …)
• Such heterogeneous data are harmonized in the data model to be imemdiately ready to use
• Frequently changing sources (e.g. OSM) are regularly updated in the local copy
– satellite imagery (MODIS, Landsat, national orthomosaics)
• Accessed both as webservices and as physical raster files
– elevation data (SRTM90, ASTER, EUDEM)
– weather forecasts (OWM)
– other data that have a spatial component (CSK catalogue, Flickr,…)
e-GEOS Geodata Toolkit is fully open source (Postgres/PostGIS, Python, GDAL) and
it is designed to fit distributed access to resources (Master node + Slave
nodes).
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7. Very detailed Base maps can be generated in less than 30
minutes using Open Geodata only thanks to:
- Single point access to all resources needed
- No time wasted in accessing different resources from
different entry points
- Availability of standard representation rules (symbolysm)
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8. ID
Vector datasets (Reference Database)
Update freq.
Scale
Coverag.
OSM
Openstreetmap, a collaborative global mapping project that provides
several base layers worldwide. Find additional details at
http://www.openstreetmap.org
Daily
Up to
Global
GADM
GADM is a global database of administrative areas at aggregated at
different levels (country, region, province, …). Current version in v2.
Find additional details at http://www.gadm.org/
Several
years
Up to
1:5000
Global
Geonames
Geonames is a global database of named locations. It includes toponyms, but also other
relevant named locations from a wide variety of different categories (natural elements,
ports, airports,…).
Find additional details at http://www.geonames.org/
Monthly
Up to
1:10000
Global
VMAP
The Vector Map is a vector-based collection of geo data at various
levels of detail. Level 0 (low resolution) coverage is global and entirely
in the public domain. Level 1 (global coverage at medium resolution)
is only partly in the public domain.
Not
updated
1:1000000
Global
EU CLC
Corine Land Cover is a European land cover database, featuring a 3
levels classification generally referenced as a standard in EU mapping
activities.
Last
update:
2006)
1:100000
EU
Urban
Atlas
The Urban Atlas is providing pan-European comparable land use and
land cover data for Large Urban Zones with more than 100.000
inhabitants. Find more details at http://www.eea.europa.eu/data-and-maps/data/urbanatlas
update:
2010)
1:25000
EU
UK
Open Data
OS OpenData is the free distribution of the UK Ordnance Survey
geodata over UK. They include all major base layers. More details at
http://www.ordnancesurvey.co.uk/oswebsite/products/osopendata.html
n.a.
1:10000
UK
ES
Open Data
BCN25 is the distribution of base layers covering the Spanish territory
derived from the base topographic maps. Find more details at
http://centrodedescargas.cnig.es/CentroDescargas/catalogo.do
n.a.
1:25000
ES
e-GEOS Geodata Toolkit
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1:5000
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9. ID
Raster datasets
Access
Type
Format
Scale
Coverag.
e-GEOS Geodata Toolkit
LANDSAT
Landsat 200 seamless orthomosaic processed by i-cubed
and provided as WMS by NASA World Wind center. If
needed, also single Landsat ETM+/TM scenes download is
implemented
WMS
FTP
GeoTIFF
1:30000
Global
MODIS
MODIS (Terra/Aqua) acquisitions covering your Area of
interest during the last three days. Natural color and
false color combinations are automatically generated.
FTP HDF
GeoTIFF
1:500000
Global
IT Aerial
Italian aerial survey 0.2m/0.5m orthomosaic. E-GEOS
REALVISTA product
WMS
GeoTIFF
1:5000
IT
SW Aerial
Swedish
aerial survey 0.5m orthomosaic
WMS
GeoTIFF
1:5000
SW
ES Aerial
Spanish
aerial survey 0.5m orthomosaic
WMS
GeoTIFF
1:5000
ES
EE
Aerial Estonian aerial survey 0.5m orthomosaic
WMS
GeoTIFF
1:5000
EE
PT
Aerial Portuguese aerial survey 0.5m orthomosaic
WMS
GeoTIFF
1:5000
PT
DEM SRTM90
Shuttle Radar Topographic Mission DEM, 90m posting.
FTP
GeoTIFF
n.a.
-60° < lat <
+60°
DEM ASTER
ASTER based DEM, 30m posting
FTP
GeoTIFF
n.a.
Lat > +60°
Lat < -60 °
DEM
EUDEM
European DEM, 20m posting FTP GeoTIFF n.a. EU
OWM Current clouds coverage and precipitation form Open
Weather Map
WMS
GeoTIFF
1:1000000
Global
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10. ID
Ancillary datasets
(Accessed as Webservices)
Access
Type
Format
Scale
Coverag.
OWM 7
7 days weather forecast (3 hours time interval) from
the 10 closest stations to your Area of Interest.
API
Shapefile
1:100000
Global
Wikimapia
Wikimapia, a collaborative global mapping project that
provides polygon features from a wide variety of
different categories.
API
Shapefile
1:25000
Global
COSMO-SkyMed
catalogue
Access the COSMO-SkyMed catalogue and download the
COSMO-SkyMed acquisitions covering your Area of
Interest in the last year.
API
Shapefile
n.a.
Global
e-GEOS Proprietary
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11. Access to vector and raster resources is managed
through a simple interface (Quantum, GIS plug in).
Once the AOI has been defined, the User can
download all the necessary data.
Vector data are all stored in a single database, that
can be further exported in ESRI format.
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12. Activation – Oklahoma City Tornado
Event description:
On the afternoon of May 20, a large, violent tornado
touched down west of Newcastle, Oklahoma and
impacted the town of Moore, causing severe damage
to residential areas as well as Plaza Towers and
Briarwood Elementary schools. The Oklahoma Office
of the Chief Medical Examiner has confirmed several
fatalities, at least 200 people injured.
Triggering entity: e-GEOS Autoactivation
e-GEOS has been proactively acquiring COSMO-SkyMed images befor and after the event,
genearting damage assessment maps provided to US Government.
e-GEOS has been regularly acquiring also optical data for optical-SAR combined analysis.
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13. Damage assessment – Open data
Damage assessment map generated less 24 hours after the
event by analyzing and georeferencing information from open
data (tweets, video,…)
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14. Damage assessment – Optical
Damage assessment map generated based on WorldView-1
image acquired on May 22nd, 2013
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15. Damage assessment – SAR
Damage assessment map generated based the
interferometric analysis of a COSMO-SkyMed pair.
Red: Amplitude CSK May 17th, 2013
Green: Amplitude CSK May 25th, 2013
Blue: interferometric coherence
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16. Damage assessment – SAR/Optical
Combination of SAR based damage assessment with Optical
based damage assessment.
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