Coastline Mapping

Why is it important?

Based on historical and recent satellite imagery we can extract information about coastal dynamics, providing estimations of coastline changes (meters/year) caused by factors such as sand erosion/deposition, infrastructure developments.

Satellite data dates back to the 1960’s and provides a detailed level of information about changes in shoreline around the world. This type of analysis provides valuable information about erosion and deposition of sand and sediments, development of vegetation cover in the coastal zone and information on coastal structures and coastal protection.

How does it work?

Satellite data dates back to the 1960’s and provides a detailed level of information about changes in shoreline around the world. This type of analysis provides vulnerable information about erosion and deposition of sand and sediments, development of vegetation cover in the coastal zone and information on coastal structures and coastal protection.

What you get!

Extracted coastlines from different years or seasons provided as ready to use in any GIS or coastal modeling software

Digital maps of the entire coastal zone providing information about vegetation, sediment, coastal protection, constructions etc.

Imagery from different years with an optimized geocode allowing you to evaluate your area of interest. Images can be added into your webGIS or desktop GIS

Typical customers?

Coastal construction companies use it to document the environmental impact, for optimal site identification and to identify baseline conditions

Coastal managers use it for coastal planning and identification of areas affected by erosion or deposition, for environmental impact assessment and monitoring

Coastal zone planners and managers benefit from continuous shoreline monitoring in order to assess the coastal dynamics in near real time on frequent basis

Specifications

Coastlines are delivered in ready-to-use vector data format

Analysis of coastline changes (erosion/deposition) can be reported by meters/year or area based (m2)

The coastlines can be derived down to a map scale of 1:1.000 and comes with flexible options accommodating varying budgets and specifications

Historical coastlines can be extracted all the way back to the 1960’s 

Price list

The price for mapping of coastline dynamics depends on frequency and availability of imagery, the length of coastline, and the level of detail

Contact us for a quote

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

Digital Elevation Model

Why is it important?

A DEM enables you to understand all aspects of the terrain and is an essential input in many geospatial analyses such as topography mapping, hydrological modelling, airspace planning, infrastructure site planning’s and environmental change applications.

An elevation model derived from satellites will overcome challenges related to the insufficient detail level in public available DEM’s such as SRTM, as well as being a more cost-efficient alternative to LiDAR and land surveyor based DEM’s.

How does it work?

A Digital Elevation Model (DEM) is a digital representation of the earth’s terrain heights.

We provide DEM’s created from stereoscopic satellite imagery, which is a highly cost-efficient alternative to traditional land and aerial based surveying approaches. A DEM can be used to derive topographic contours and compute elevation slope, aspect and other topography characteristics used in many geospatial analyseis.

A DEM can be delivered as both a digital surface model (DSM) which includes surface features such as vegetation and man-made structures, as well as a bare-earth representation without above ground objects (DTM) – both options ranging from 50 cm to 30 m in spatial resolution

What you get!

Updated and tailormade Digital Elevation Model (DTM/DSM), delivered in any ready-to-use GIS format

Possible additional data layers such as contour lines, hydrological enhancements, satellite imagery

Our independent and qualified advice on selecting the right solution suited to your project requirements

Typical customers?

Hydrological modelers work with DEM’s for flood modelling

Aerial operators (e.g. UAV and airplane pilots) need accurate terrain heights to safely plan their flight

Wind resource modelers need accurate terrain heights to estimate onshore wind resources

Specifications

Delivery time: Some products are ready to go, others need a bit more processing time

To further enhance the accuracies of the DEM, a few ground control points (GCP) is very often beneficial

We will assist with experience and guidance

Price list

Typical pricing:

1m DEM: 60-90 EUR/sqkm

4m DEM: 30-50  EUR/sqkm

Minimum order size: 100 sqkm

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871