plus - minus method

TUGAS PRAKTIKUM METODE SEISMIK I

‘PLUS – MINUS METHOD’

Muhamad Wildan Perdana12201

1. DATA

No. Geophon

eJarak

T forward (s)

T reverse (s)

TSD TS'D' ΔTd Hd

0 0 0 0 0.11638740.19067999

30.0920487

26.52102

1 50.05525999

50.19067999

30.1194439

0.190679993

0.09357695

28.36625

2 100.06983999

60.18816000

40.1225004

0.188160004

0.09384521

28.44757

3 150.08489999

40.18497999

60.1255569

0.184979996

0.09378345

28.42885

4 200.09521999

40.18263999

90.1286134

0.182639999

0.094141728.5374

4

5 250.11345999

10.18053999

30.1316699

0.180539993

0.09461995

28.68242

6 300.12593998

70.17694000

20.12593998

70.17694000

20.089955

27.26832

7 350.13079998

80.16805999

80.13079998

80.16805999

80.087945

26.65902

8 400.14033999

60.16469999

70.14033999

60.16469999

70.091035 27.5957

9 450.14117999

30.15935998

50.14117999

30.15935998

50.0887849

926.9136

5

10 500.14351998

90.15749998

50.14351998

90.15749998

50.0890249

926.9864

11 550.15071998

60.15599998

50.15071998

60.15599998

50.0918749

927.8503

3

12 600.15749998

50.15029998

80.15749998

50.15029998

80.0924149

928.0140

2

13 650.16445999

10.15155998

20.16445999

10.15155998

20.0965249

929.2599

14 700.16679998

80.15029998

80.16679998

80.15029998

80.0970649

929.4235

915 75 0.16913998 0.14771998 0.16913998 0.14771998 0.0969449 29.3872

4 6 4 6 9 1

16 800.17039999

40.14561999

50.17039999

40.14561999

50.096525 29.2599

17 850.17357998

70.13967999

30.17357998

70.13967999

30.0951449

928.8415

7

18 900.17417999

30.13715998

80.17417999

30.13715998

80.0941849

928.5505

7

19 950.17651998

90.12467999

30.17651998

90.12467999

30.0891149

927.0136

8

20 1000.17735998

50.11747998

80.17735998

50.12765263

0.09102131

27.59155

21 1050.17777998

40.10415998

80.17777998

40.12433063

0.08957031

27.1517

22 1100.17945999

10.09203999

30.17945999

10.12100863

0.08874931

26.90283

23 1150.18053999

30.07853999

30.18053999

30.11768663

0.08762831

26.56302

24 1200.18221998

60.05735999

70.18221998

60.11436463

0.08680731

26.31415

25 125 0 00.18221998

60.11104263

0.08514631

25.81065

2. Grafik Time Vs Offset

3. Grafik T SD – T S’D’ Vs Offset

20 40 60 80 100 1200

0.05

0.1

0.15

0.2

0.25

0.3

f(x) = 0.000611284195087719 x + 0.116387358473684

T SD Vs Offset

T SD Vs Offset

Linear (T SD Vs Offset)

Offset (m)

T SD

(s

)

4. Grafik T S’D’ Vs Offset

0 20 40 60 80 1000

0.05

0.1

0.15

0.2

0.25

0.3

f(x) = − 0.000664400115789474 x + 0.194092629473684

T S'D' Vs Offset

T S'D' Vs Offset

Offset (m)

T S

'D' (

s)

5. Grafik TSD - TS'D' Vs Distance

0 20 40 60 80 100 120 140

-0.1

-0.08

-0.06

-0.04

-0.02

0

0.02

0.04

0.06

0.08TSD - TS'D' Vs Distance

TSD

- TS'

D'(s

)

Distance(m)

6. Perhitungan

7. Model Bawah Permukaan

0 10 20 30 40 50 60 70 80 90 100110

120

0

10

20

30

jarak (m)

kedalaman (m)

8. Referensi

Geophysics Expdition 2010 Handbook.