Terraspatium backed by i-Sea has processed hundreds of satellite images over the 1995-2020 period of time to perform the very first dataset describing the location and evolution of shoreline over time in Greece, which has been then turned into a preliminary coastal erosion assessment at the scale of the Peloponese, Eastern Macedonia and Thrace regions.

In Greece, as in every coastal mediterranean regions and similar enclosed seas where the tidal range is low, coastal erosion can be monitored by focusing on waterline temporal variations during low-energy wave conditions.  Optical satellite archives (Landsat, Spot, Sentinel-2) have been processed using supervised classification algorithms to extract land/sea interface in a semi-automated user-controlled and robust way ensuring readiness for large database processing and method replicability at regional and national scales.
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Changes in the waterline position are usually computed and estimated along regularly spaced profiles perpendicular to the coast highlighting hot spots of shoreline retreat which experience strong coastal dynamics or being particularly vulnerable to coastal erosion hazard.

​A first demonstration of satellite-derived bathymetry has been made in Greece, here is an example obtained at Laganas Island, where the underwater topography has been retrieved up to depths of 30 m. This opens door to systematic monitoring of shallow water bathymetry changes over sandy areas suffering from coastal erosion and in complement to beach and shoreline monitoring with the overall objective of achieving a better understanding of coastal dynamics and sediment budgets.

​Directly derived from satellite-based waterline time series, variations in shoreline position may be computed at every required time scale, as here along the Northern Peloponese coast where shoreline evolution was computed on a 5-year basis. The same has been done in other European regions at higher frequency (monthly) enabling catching storm impact and beach natural recovery in the months following storm events.
The results obtained during the project lifetime #25-year of shoreline change over more than 900 kms of coastline# testify how mature is the Space for Shore coastal erosion service and ready to play an active role in the future coastal monitoring infrastructure the Greek authorities has been thinking about…

​“Through the Space for Shore project, a comprehensive set of in situ scientific measurements, combined with numerous retrospective remote sensing data were produced. Thus, an evidence-based up to date assessment framework for the extent of coastal erosion was provided, rendering it an extremely helpful and substantially incomparable toolkit to the coastal managers throughout the Region, both for present and future use.”
A. Nalmpantis (Region of Eastern Macedonia & Thrace)
 
“Outstanding first try, you set up the road for the coastal monitoring in Greece”.
Dr. T. Papadopoulos (Peloponnese Technology and Innovation Centre)

​Some numbers
Years analysed : 25
Km monitored : >900
Sites of interest : 09
Products : 385



Here you can find the full Greek Case Study of Space for Shore project.

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The European Space Agency together with ARGANS and i-Sea is organising the ESA Coastal Erosion 2021 Webinar, Terra Spatium is a member of Space for Shore project coordinated by i-Sea.
The event will be take place on the 22nd of January 2021. The conference is open to:

• Coastal Monitoring users,
• scientists,
• students,
• representatives from National, European and International Space Agencies,
• Value Adding Industries,
• Laboratories and Universities.

For registration/agenda press here.

Useful link:
https://eo4society.esa.int/event/esa-coastal-erosion-webinar-2020/
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Trimble Inpho version 11 is now available for all Inpho software products, including UASMaster. Highlights of this main release are:
Workflow enhancements in MATCH-3DX
The improved 3D reconstruction engine in MATCH-3DX offers a smoother workflow in the production line. Using .laz as internal point cloud format results in a drastic project size reduction while an increased efficiency in reading .laz files brings significant performance improvements for slow file systems such as network drives and HDDs.
New 'Batch-Processing' feature in MATCH-3DX
The new feature 'Batch-Processing' in MATCH-3DX allows users to produce point clouds from repeated flights of the same camera in the same area, increasing productivity especially for forensics, insurance and disaster management applications.
Simplified interface for Distributed Processing
Inpho Version 11 now offers a user interface for simplifying the Distributed Processing based on HTCondor™ pool configuration. This is a highly requested feature (recommended for usage of 3 machines and more) available for MATCH-T and OrthoMaster with favorably Distributed Processing Licenses (DPL) and also for MATCH-3DX (no DPL available yet).
Unified matching engine in UASMaster
A new and unified image matching engine enhances the matching geometry and tie point generation for challenging UAS projects in aerial scenarios and delivers outstanding performance and stability in close range scenarios.
Further information can be found in our blog post as well as in the release notes for Inpho and UASMaster.

Upcoming webinar
Don't miss our webinar on Monday, November 30th, to learn more about the new features in Inpho version 11. We are offering a session in English as well as Spanish.