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Title

Monitoring of theSouth Balitic Seaside

based on the airborne laser scanning (The presentation I made for Maritime Office

of Szczecin)

Autor: Individual researcher Ewa Anna Gasińska The point cloud from 2012 I got from Gispro z o.o.

The point cloud from 2011, 2009 I got from Maritime Office of Szczecin

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Table of contents

• Introduction• Project description• 2.Trzęsacz• 2.1 Models Comparison• 2.2 Profiles• 2.3 Distance from the beach to the energy line and to

the buildings• 2.4 Summary• 3. Mrzeżyno• 3.1 Visualization-point color• 3.2 Comparison profiles• 3.3 Models Comparison• 3.4 Summary• 4. Niechorze- colored point cloud• 4.1 Models Comaprison• 4.2 Delta volume calculations and profiles• 4.3 Influent simulation sea into land.• 4.4 Summary• 5. Conclusion

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Introduction

Based on the airborne laser scanning we can create models which

represent altitude changes in the sea environment. Describe as Digital Terrain Model or Digital Surface Model.

As well Digital Terrain Model as Digital Surface Model we use to the create profiles and show it in the softwares such as CAD.

By the point cloud from different year we can calculate volume differences in the m3.

Point cloud we can give color from image based on the ortophotomap.

By the use special software intendent to the point cloud we can estimate size of the changes in the seaside. In many countries the erosion on the seaside is a problem so we have to monitoring of the progress.

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1. Project description

The flight mission was made in 03.01.2012, rest in 2009 and 2011. Point cloud about density 10 points per square meters cover area longest as 28 kilometers and spread 650 meters. Used data was in coordinate system 1992. I used images from Digial camera Ultracam Eagle about pixel around 8 centimeter to the ortophotmap production. Below places were made flight mission.

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2.0 First place is in Trzęsacz (Poland). Coloured point cloud based on the ortophotmap. Measuring seaside by cross-section.

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2.1 Models Comparison.The model detect the ground changes between 2011 and 2009.

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2.2 The picture shows coloured point cloud. The lines are each 50 meters and the show places where I made profiles.

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These profiles in cad softwares are show the cliff measurements in the different years. We can estimate changes.

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Profiles

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Profiles

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Profiles

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Profiles

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2.3 Distance from the beach to the energy line and bulidings based on the cloud point.

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2.4 Summary

• As we see from the model and from the profiles. In this place beach lost a lot of sand from 2009. The process develop coastal erosion. There are many techniques which can help in this situation before the cliff will be damage. First we have to locate place where it happend and measure the progress in time. Very important is create very accurate the Digital Terrain Model from point cloud and after that detect changes. Also is important to fit the scans from different years relative to the self to receive very good accuracy.

In the time when we will monitoring the coastal erosion we can also define distance from the beach to the bulidings and to the electric line.

By the coloured point cloud and use it cad software. We can also show if they are still egzist near coast the bicacle path and obstacle course.

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3.0 Visualization of the port in Mrzeżyno (Poland).

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3.1 Profiles near the port in Mrzeżyno. Beach hight changes in each year.

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Compared profiles

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Compared profiles.

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Compared profiles

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Compared profiles

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Compared profiles 400 meters from the port in Mrzeżyno.

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3.2 The model show how it change the coast in each year. The area is long as 800 meters and spread as 100 meters. Progress changess in period 2009-2011 and 2011-2012. I based on the grid with eye 0.5 meter. I use Digital Terrain Model.

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Model – Mrzeżyno. Comapred based on grid with eye 0.5 meter.

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3.3 Summary

The profiles show changes for each year. This time I used point cloud from 2009, 2011, 2012. As we see near port in Mrzeżyno the beach lost a lot of sand. So I have measured by cross-section diffrences and next detect the extend by the models differences.

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4.0 Niechorze (Poland). Localization of the area. Coloured point cloud.

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4.1 Model differences- Niechorze. Progress changes in period 2009-2011 and 2011-2012. Compered based on the grid with eye 0.5 meters. The area is long as 2 kilometers and spread as 80 meters.

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Model differences. Compared based on the GRID with eye 0.5 meter.

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4.2 Delta volume calculation between the paralell ground from different year. Based on the same area for each year (2009,2011,2012).

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Cross section. Delta volume calculation (m3) and result. - Niechorze

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Cross-section. Delta volume calculation ( m3) and result - Niechorze

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Profile on the beach near the sand dunes.Delta volume calculation (m3) and result

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Profile on the beach near the sand dunes.Delta volume calculation (m3) and result

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Cross - section. Delta volume calculation (m3) and result – Niechorze

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Cross -section. Delta valume calculation (m3) and result – Niechorze

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Cross-section on the dunes - Niechorze

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Profile on the beach – Niechorze.

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Profile on the beach. Delta volume calculation (m3) - Niechorze

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Profile on the beach. Delta volume calculation (m3) - Niechorze

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Profile on the beach. Delta volume calculation (m3) - Niechorze

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Profile on the beach. Delta volume calculation (m3) - Niechorze

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Profile on the beach. Delta volume calculation (m3) and result- Niechorze

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Profile on the beach. Delta volume calculation (m3) - Niechorze

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Profiles on the beach. Delta Volume calculation (m3) - Niechorze

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Coloured point cloud. Visualisation area where I did Influent simulation sea into land. Poland- Niechorze

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4.3 Influent simulation sea into land. Based on the point cloud from 03.01.2012. We can predict sytuation when level of the sea will grow 0.10 centimeter.

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Situation on the beach when the sea level will grow 0.20 or 0.30 centimeter

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Situation in the river when the sea level will grow 0.40 or 0.50 centimeter

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4.4 Summary

• When level the sea will change 0.50 meters. Water will fluent into the river nad next water in the lake near this place will grow up. We for this situation we call eddy (fluid dynamics).

• This situation is popular during the storm when the water level in the sea is growing.

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5.0 Conclusion

Posibillities of the Airborne Laser Scanning in seaside are:

>Research situation after storm, where is erosion progress. In this case sediments on the beach is moving to another place.

>Measurement the distance from shoreline to the buildings or electric line.

>Visualization of the breakwater or ports>Influent simulation the sea level into the land>Delta volume calculation> Where was of the human intervention .