Lok Sabha Question No. 4415 (UNSTARRED), answered on 2017-03-29
Subject: Shoreline Mapping
Ministry: EARTH SCIENCES
Asked by: POONAM  MAHAJAN

## GOVERNMENT OF INDIA MINISTRY OF EARTH SCIENCES LOK SABHA

## UNSTARRED QUESTION NO. 4415 TO BE ANSWERED ON WEDNESDAY, March 29, 2017

## SHORELINE MAPPING

## 4415. SHRIMATI POONAM MAHAJAN:

Will the Minister of EARTH SCIENCES be pleased to state:

- (a) whether  the  Government  deploys  shoreline  vulnerability mapping technology in the country;
- (b) if  so,  the  details  thereof  including  shoreline  information  of the  coastal  States,  State-wise  including  Maharashtra  and the  expenditure  incurred  to  map  shorelines  in  the  country during the last three years, year wise;
- (c) the details and number of satellites utilised to  map shoreline change rates in the country;
- (d) whether  the  shoreline  mapping  technology  measures  the effects of global warming in the country; and
- (e) if so, the details thereof?

## ANSWER MINISTER OF STATE FOR MINISTRY OF SCIENCE AND TECHNOLOGY AND MINISTRY OF EARTH SCIENCES

## (SHRI Y. S. CHOWDARY)

- (a) Yes, Sir. The Indian National Centre for Ocean Information Services (INCOIS) has assessed shoreline change using the satellite data acquired during 1972-2000 in order to calculate the shoreline change rate. Shoreline change rate is  one  of  the  input  parameters  to  calculate  the  coastal vulnerability index along the Indian coast.
- (b) This  work  was  carried  out  during  the  period  2007-2009  at INCOIS using the satellite data acquired during 1972-2000, State  wise  shoreline  change  rate  calculated  at  1:100000 scale are given below

| State       | Length (km)*   | Length (km)*   | Length (km)*   | Length (km)*   |
|-------------|----------------|----------------|----------------|----------------|
| State       | Erosion        | No change      | Accretion      | Total          |
| Gujarat     | 933            | 650            | 573            | 2156           |
| Maharashtra | 309            | 518            | 114            | 941            |
| Goa         | 43             | 131            | 19             | 193            |
| Karnataka   | 67             | 229            | 39             | 334            |

| Kerala      | 205   | 322   | 93   | 621   |
|-------------|-------|-------|------|-------|
| Tamil Nadu  | 286   | 489   | 159  | 934   |
| Andhra      |       |       |      |       |
| Pradesh     | 185   | 473   | 430  | 1087  |
| Orissa      | 153   | 220   | 125  | 498   |
| West Bengal | 863   | 750   | 314  | 1927  |
| Lakshadweep | 30    | 98    | 24   | 152   |
| Andaman     | 366   | 1573  | 511  | 2449  |
| Nicobar     | 286   | 200   | 317  | 803   |

*Length of coastline including the creeks, bays, deltas and estuary

Satellite data were taken from open source Landsat of USA and  Indian  Remote  Sensing  (IRS)  satellite  of  India  data available at INCOIS from other projects were used; hence no expenditure  was  incurred  towards  data  specific  to  this work.

(c) Data  from  the  satellites  -  Landsat:  MSS;  TM;  ETM  decadal data  sets  (1972,  1990,  2000)  and  IRS:1C/D;  Resources  at data were used for this study.

(d)  and  (e)This  study  did  not  estimate  specific  impact  due  to  climate change.

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