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High Resolution 1:10,000 scale Mapping Strategy of Multi ... - NDMA

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6<br />

7<br />

8<br />

9<br />

5.4 <strong>Mapping</strong> Requirement for Earthquake Hazard Zonation 45<br />

Methodology for Flood Hazard <strong>Mapping</strong> 46<br />

6.1 Introduction 46<br />

6.1.1 Rivers Flowing into Bay <strong>of</strong> Bengal 49<br />

6.1.2 Rivers Flowing into Arabian Sea 50<br />

6.1.3 Rivers Flowing into Inner Part <strong>of</strong> India 52<br />

6.2 Dams in India- Irrigation and Power 52<br />

6.3 Areas effected by Floods in India 53<br />

6.4 Definitions <strong>of</strong> useful Flood Maps 56<br />

6.5 Traditional Techniques <strong>of</strong> Floodplain <strong>Mapping</strong> 57<br />

6.6 Methodology <strong>of</strong> Flood Hazard Zoning 60<br />

6.6.1 Description <strong>of</strong> Technology 60<br />

6.6.2 Base Map Information 64<br />

6.6.3 Base Flood Elevation (BFE) 64<br />

6.6.4 Elevation Data 65<br />

6.7 Elevation for Nation Method 66<br />

6.8 Summary <strong>of</strong> Methodology 66<br />

6.9 <strong>Mapping</strong> Requirement for Flood Hazard Zonation 69<br />

Methodology for Hazard <strong>Mapping</strong> <strong>of</strong> Landslides 70<br />

7.1 Description <strong>of</strong> Landslide Hazard 70<br />

7.2 Trigger Factors for Landslide 72<br />

7.3 Landslide Hazard Zonation Modeling 74<br />

7.4 Landslide Prone Areas in India 75<br />

7.5 <strong>Mapping</strong> Requirement for Landslide Hazard Zonation 76<br />

Satellite Imagery in Disaster Management and for Generating <strong>Multi</strong>-<br />

Hazard Maps (MHM) 77<br />

Various Methodology Available for Procurement <strong>of</strong> 1:<strong>10</strong>,<strong>000</strong> Images<br />

80<br />

9.1 Satellite Imaging 80<br />

9.2 Aerial Photography 81<br />

9.3 Comparison between Satellite Imaging and Aerial <strong>Mapping</strong> 82<br />

9.3.1 General Differences 82<br />

9.4<br />

Comparison between Lidar, <strong>High</strong> <strong>Resolution</strong> Stereo<br />

Satellite Image and Aerial Photo<br />

82<br />

9.5 Comparison <strong>of</strong> Accuracy <strong>of</strong> Imaging 84

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