developments and benefits of hydrographic survey using multispectral imagery
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Developments and Benefits of Hydrographic Surveying Using
Multispectral Imagery - GSI Case Study
Helen Needham, Proteus [email protected] Carroll, Proteus [email protected] +1(585)210 0090
Photo Some rights reserved by Nataraj Metz
Hydrographic Data
Accurate and current hydrographic data is crucial for:● Navigation charts● Environmental
assessment● Coastal Engineering● Dredging● Near-shore projects● Natural disaster risk
assessment● UNCLOS territorial
claim
Hydrographic Data Challenges: Collection
Hydrographic Data Challenge:Available Coverage/Currency
Hydrographic Data Challenge:"White Strip" limitations
New Approach to Bathymetric Survey: Satellite Imagery
Imagery Multispectral Capabilities
EOMAP MIP System (Modular Imagery Processing)
Bathymetric Survey
Seabed Classification
Water Quality: TSM
Water Quality: Turbidity
Water Quality: Chlorophyll
Water Quality: Coloured Dissolved Organic Material (CDOM)
Water Quality: Light Absorption (Z90 MAX)
Geological Survey of Ireland & INFOMARThe INtegrated Mapping FOr the Sustainable Development of Ireland’s MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey of Ireland and the Marine Institute. The programme is a successor to the Irish National Seabed Survey (INSS) and concentrates on creating a range of integrated mapping products of the physical, chemical and biological features of the seabed in the near-shore area.
GSI: Planned Lidar Survey Areas (Red)
GSI: Successful Lidar Collections
GSI: First Satellite Bathymetry RFP
Wexford Bay Trail Project
Wexford Bay in Google Earth
Wexford Bay: Ground Truthing
Conclusions:
● Existing collection methods costly and not timely
● New satellite imagery / processing expanding products
● Timely, low-cost accurate products