Intertidal Beach Morphology from Argus Susanne Quartel

Aim Extracting intertidal beach morphology – – Migration of intertidal beach features – – Beach behaviour on long timescale (weeks – seasons)

Data 13 – 18 February 2002 (springtide on 16 th ) Conditions: – – Small waves mainly from the North with short periods (  5.5 s) – – Offshore wind causing set-down

Argus Noordwijk

75 m

Method

Red Green Blue intensity profiles

Method Red Green Blue intensity profiles HWLupper bartrough water lower bar WL

Bar / Trough Migration lower bar trough upper bar

Method 12

south Rip Behaviour rip 1

Rip Behaviour south rip 1 rip 2

Discussion & Conclusions Migration cross-shore after 5 days: – – upper bar13 m – – trough 6 m – – lower bar10 m Behaviour Rip: migration southward and disappears – – seaside10 m/day – – landside 5 m/day Criteria – – gradients – – RGB – ratio

Future RGB – ratio R_ratio = R-(G+B) / (R+G+B)

Future RGB - ratio Hue Saturation Value eCognition (Remote Sensing Programme): – – Object oriented approach extracting homogeneous regions. – – Segmentation based on colour and shape.

Future