How Many Blasts Will it Take?

Page - May 5, 2005
Approximately 285 million seismic blasts from an average vessel would be required to survey the entire U.S. Outer Continental Shelf.
   

Number of Seismic Blasts

Pounds of TNT equivalent

Estimated COST

Minerals Management Service Planning area

Total Area (sq. km.)

Blasts required for 25 meter data = 40 blasts/sq. km

Blasts required for 6 meter data = 167 blasts/sq. km

@ 40 blasts /sq. km.

@ 167 blasts /sq. km.

Total cost for data acquisition* @ $7000/sq km

             

North Atlantic

204,894

8,195,760

34,217,298

18,030,672

75,278,056

$ 1,434,258,000

Mid Atlantic

313,677

12,547,080

52,384,059

27,603,576

115,244,930

$ 2,195,739,000

South Atlantic

513,395

20,535,800

85,736,965

45,178,760

188,621,323

$ 3,593,765,000

Straits of Florida

39,442

1,577,680

6,586,814

3,470,896

14,490,991

$ 276,094,000

Total Atlantic region

1,071,440

42,857,584

178,930,414

94,286,685

393,646,911

$ 7,500,077,233

             

Eastern Gulf of Mexico

306,155

12,246,200

51,127,885

26,941,640

112,481,347

$ 2,143,085,000

Central GOM

193,433

7,737,320

32,303,311

17,022,104

71,067,284

$ 1,354,031,000

Western GOM

145,406

5,816,240

24,282,802

12,795,728

53,422,164

$ 1,017,842,000

Total GOM

644,994

25,799,760

107,713,998

56,759,472

236,970,796

$ 4,514,958,000

             

Central California

176,758

7,070,320

29,518,586

15,554,704

64,940,889

$ 1,237,306,000

Northern California

181,247

7,249,880

30,268,249

15,949,736

66,590,148

$ 1,268,729,000

Southern California

360,110

14,404,400

60,138,370

31,689,680

132,304,414

$ 2,520,770,000

Washington-Oregon

287,331

11,493,240

47,984,277

25,285,128

105,565,409

$ 2,011,317,000

Total Pacific

1,005,446

40,217,840

167,909,482

88,479,248

369,400,860

$ 7,038,122,000

             

Beaufort Sea

263,353

10,534,120

43,979,951

23,175,064

96,755,892

$ 1,843,471,000

Cook Inlet/ Shelikof Strait

21,677

867,080

3,620,059

1,907,576

7,964,130

$ 151,739,000

Kodiak

362,418

14,496,720

60,523,806

31,892,784

133,152,373

$ 2,536,926,000

Total Alaska Region

4,396,627

175,865,060

734,236,626

386,903,132

1,615,320,577

$30,776,385,521

             

Total OCS

7,118,343

284,733,720

1,188,763,281

626,414,184

2,615,279,218

$49,828,401,000

Total without AK

2,721,716

108,868,660

454,526,655

239,511,052

999,958,641

$19,052,015,479



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