LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Lidarbathymetry

in the context of coastal protection

Schleswig-Holstein State Agency for Coastal Defence, National Park and

Marine Conservation (LKN-SH)

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

HUSUM

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Lengst of coastline

ca. 640 Kilometer

Lengst of coastline

ca. 550 Kilometer

Nord Sea Baltic Sea

The Masterplan Coastal Protection

What to protect?

area: 3.900 km² (25%, 15800km²)

inhabitants: 354.300 (12%, 2,8Mio)

values: 48,7 Mrd. €

How to protect?

dykes state SH: 433 km

dykes regional: 96 km

2. Dyke line: 570 km

constructions: 140

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

North Sea Baltic Sea

Department of Survey: Tasks

- Preliminary work for coastal protection measures- (Vorarbeiten zu Küstenschutzmaßnahmen)

- Planning principles for coastal protection measures- (Planungsgrundlagen für Küstenschutzmaßnahmen)

- Conservation of evidence after planning approval- (Beweissicherung nach Planfeststellungen)

- Monitoring programms for technical plannings- (Monitoring-Programme gemäß Fachpläne)

- Legal duty to maintain saftey in different habours- (Verkehrssicherung in landeseigenen Häfen)

- Dewatering- (Vorflutsicherung)

- Data basis for GIS/CIS- (Grundlagen im Rahmen des Mess- und Beobachtungsdienstes, Datenvorsorge KIS)

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Terrestrial Survey

Hydrographical Survey

Lidar, Orthofotos

Proceedings

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Shallow water down to one meter

only terrestrial survey

Baltic Sea

Conditions for survey

Hydrographical surveyLidar and

terrestrial survey

Goal for coastal protection: complete survey of the whole area without a gap

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

LLUR

4m

3m

5m

5m

5m

3m

1-1.5m

0-0.5m

3m

4m

LKN-SH

Conditions for Lidarbathymetry Secchi depths

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

First test in 2012: area Probstei

–600m flying height

–450m bandwidht

–20 bis 40 points/m² multiple flight

–Riegl VQ-820-G (1Secchi)

–Secchi ca. 4 – 5 m

Laserbathymetry

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

LBathy Probstei 2012: view

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

LBathy 2012: colored points

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

LBathy 2012: DTM whole area

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

LBathy 2012: DTM Marina Wentorf

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Lbathy 2012: accuracy

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Valuation Probstei 2012

•Depths down to 5 meter area-wide

•Correlates with 1 secchi (4-5 m)

•Accuracy (10-20 cm) near hydrographical accuracy

•Most of the area of interesting for coastal protection

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Summary

Laserbathymetry

•Dry land and shallow water areas without a gap•Depth is dependend on turbidity

•Shallow water systems (1 Secchi-depth)•Deep water systems (2 to 3 Secchi-depths)

•accuracy (declaration of the producer)• Shallow water systems : horizontal 0,5 m, vertical 0,1

bis 0,2 m• Deep water systems : horizontal 2 m, vertical 0,2

bis 0,3 m

•Systems are in strong development this time

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Area of LaserbathymetryThe whole coastline (ca. 640km, ca. 800km²)

from the buildungs of coastal protection

on the dry land down to 3-5m (1Secchi),

Minimum: data until the area of hydrographic survey

Baltic Sea

LKN-SH | BSHC Lidar Seminar | Lutz Christiansen | Hannover, 28.05.2014

Tender in 2013, realization in 2014

Laserbathymetrie ca. 410 km²

Several morphological structures:

Baltic Sea

•Overhanging trees,

•coastal wood,

•stones,

•footbridges,

•Underwater vegetation

Flights in April 2014

Data evaluation is running

Thank you for the attention !