seismik refraksi_metode plus minus
TRANSCRIPT
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8/10/2019 Seismik Refraksi_Metode Plus Minus
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3 November 2014raktikum Seismik
Refraksi
Metode Plus Minus
Universitas Gadjah MadaGEOFISIKA
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Praktikum Seismik Refraksi Metode Plus Minus
Tugas 1
Lapisan Miring SP1 & SP4
Equation SP1 SP4 Velocity SP1 SP4 Source to Source Time SP1 SP4
Direct Forward y = 3.074x - 7.65 V1 Forward 325.30904 Forward 261.56275
Refract Forward y = 0.9083x + 41.3 V1 Reverse 344.82759 Reverse 243.7545
Direct Reverse y = -2.9x + 703.7 V1 rata-rata 335.06831 Average 252.65863Refract Reverse y = -0.9262x + 246.07 V2 1093.4937
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0
0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240
Kedalaman(m)
Jarak (m)
Model Lapisan Lapuk
SP 1 dan SP 4
Lapisan 2
Lapisan 1
y = 3.074x - 7.65
y = 0.9083x + 41.3
y = -2.9x + 703.7
y = -0.9262x + 246.07
0
50
100
150
200
250
300
0 50 100 150 200 250 300
TravelTime(ms)
Distance (m)
Grafik Hubungan T-X SP1 SP 4
Travel Time vs Distance
SP 1 Lapisan 1 SP 1 Lapisan 2 SP 4 Lapisan 1 SP 4 Lapisan 2
y = 0.9108x - 203.04
-300
-200
-100
0
100
200
300
0 100 200 300 400 500 600
Tminus(ms)
2X (m)
Grafik Hubungan SP1 SP4
Tminus vs 2X
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Praktikum Seismik Refraksi Metode Plus Minus
Lapisan Miring SP2 & SP3
Equation SP2 & SP3 Velocity SP2 & SP3
Source to Source Time SP2
& SP3
Direct Forward y = 3.08x - 254.1 V1 Forward 324.6753 Forward 96.322
Refract Forward y = 0.7748x - 29.538 V1 Reverse 324.6753 Reverse 104.68075
Direct Reverse y = -3.08x + 500.5 V1 rata-rata 324.6753 Average 100.501375
Refract Reverse y = -1.1149x +196.66 V2 1060.221
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-20
-15
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0
85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160
Kedalaman(m)
Jarak (m)
Model Lapisan Lapuk
SP 2 dan SP 3
Lapisan 2
Lapisan 1
y = 0.9492x - 228.33
-100
-50
0
50
100
150 200 250 300 350
Tminus(ms)
2X (m)
Grafik Hubungan SP2 SP3
Tminus vs 2X
y = 3.08x - 254.1
y = 0.7748x - 29.583
y = -3.08x + 500.5
y = -1.1149x + 196.66
0
20
40
60
80
100
120
80 100 120 140 160 180
TravelTime(m)
Distance (m)
Grafik Hubungan T-X SP2 SP 3
Travel Time vs Distance
SP 2 Lapisan 1 SP 2 Lapisan 2 SP 3 Lapisan 1 SP 3 Lapisan 2
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Praktikum Seismik Refraksi Metode Plus Minus
Korelasi
Dari korelasi SP1 & SP 4 dengan SP2 dan SP3 diperoleh hasil seperti gambar diatas. Hasil gamabr diatas tidak berkorelasi dengan baik
pada jarak 85 meter, hal itu dapat diakibatkan oleh beberapa factor, salah satunya adalah kesalahan perhitungan. Factor lain yang dapat
mempengaruhi juga dapat berasal dari kesalahan menentukan data mana yang akan digunakan.
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Tugas 2
Line Handaru_1
Equation Line 1 Velocity Line 1 (m/s) Source to Source Time Line 1 (ms)
Direct Forward y = 3.334x - 8.34 V1 Forward 299.94 Forward 151.57075
Refract Forward y = 1.0497x + 28.231 V1 Reverse 299.94 Reverse 148.155
Direct Reverse y = -3.334x + 391.74 V1 rata-rata 299.94 Average 149.862875
Refract Reverse y = -0.978x +150.6 V2 996.4129
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-3
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0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalama
n(m)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_1
Host
Interface
y = 3.334x - 8.34
y = 1.0497x + 28.231
y = -3.334x + 391.74
y = -0.978x + 150.6
0
20
40
60
80
100
120
140
160
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_1
Forward 1 Forward 2 Reverse 1 Reverse 2
y = 1.0036x - 121.39
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_1
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Praktikum Seismik Refraksi Metode Plus Minus
LINE HANDARU_1
SP Elev X-loc Y-Loc Depth
The spread contains 2 shotpoints and 25 geophones
1 0 2.5 120 0
2 0 117.5 120 0
Geo Elev X-loc Y-Loc SP 1 SP 2 Forward-ms Reverse-ms 2x-ms Tminus-ms Tplus-ms H
1 0 0 120 8.33 150.66 28.635 150.66 0 -122.025 29.43213 -4.62862
2 0 5 120 8.33 145.66 33.8415 145.66 10 -111.8185 29.63863 -4.6611
3 0 10 120 25 140.22 39.048 140.22 20 -101.172 29.40513 -4.62438
4 0 15 120 41.67 135.02 44.2545 135.02 30 -90.7655 29.41163 -4.6254
5 0 20 120 50.08 133.5 50.08 133.5 40 -83.42 33.71713 -5.30256 0 25 120 58 128.97 58 128.97 50 -70.97 37.10713 -5.83562
7 0 30 120 62.53 121.02 62.53 121.02 60 -58.49 33.68713 -5.29778
8 0 35 120 63.54 114.07 63.54 114.07 70 -50.53 27.74713 -4.36363
9 0 40 120 68.95 109.87 68.95 109.87 80 -40.92 28.95713 -4.55392
10 0 45 120 73.26 104.07 73.26 104.07 90 -30.81 27.46713 -4.3196
11 0 50 120 78.61 100.56 78.61 100.56 100 -21.95 29.30713 -4.60896
12 0 55 120 86.5 98.96 86.5 98.96 110 -12.46 35.59713 -5.59816
13 0 60 120 92.64 91.37 92.64 91.37 120 1.27 34.14713 -5.37012
14 0 65 120 94.16 85.16 94.16 85.16 130 9 29.45713 -4.63255
15 0 70 120 100.55 81.6 100.55 81.6 140 18.95 32.28713 -5.07761
16 0 75 120 104.22 75.13 104.22 75.13 150 29.09 29.48713 -4.63727
17 0 80 120 109.42 72.27 109.42 72.27 160 37.15 31.82713 -5.00527
18 0 85 120 117.53 76.97 117.53 76.97 170 40.56 44.63713 -7.01982
19 0 90 120 130.39 70.73 130.39 70.73 180 59.66 51.25713 -8.06091
20 0 95 120 138.31 56.97 138.31 56.97 190 81.34 45.41713 -7.1424921 0 100 120 132.62 49.3 132.62 49.3 200 83.32 32.05713 -5.04144
22 0 105 120 136.21 41.67 136.21 47.9095 210 88.3005 34.25663 -5.38734
23 0 110 120 140.78 25 140.78 43.019 220 97.761 33.93613 -5.33694
24 0 115 120 145.66 8.33 145.66 38.1285 230 107.5315 33.92563 -5.33529
25 0 120 120 150.66 8.33 150.66 33.238 240 117.422 34.03513 -5.35251
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Line Handaru_2
Equation Line 2 Velocity Line 2 Source to Source Time Line 2
Direct Forward y = 3.334x - 8.34 V1 Forward 299.94 Forward 152.38425
Refract orward y = 1.0667x + 27.047 V1 Reverse 299.94 Reverse 147.59225
Direct Reverse y = -3.334x + 391.74 V1 rata-rata 299.94 Average 149.98825
Refract Reverse y = -0.9631x +150 V2 994.7279
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0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalama
n(m)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_2
Host
Interface
y = 3.334x - 8.34
y = 1.0667x + 27.047
y = -3.334x + 391.74
y = -0.9631x + 150
0
20
40
60
80
100
120
140
160
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_2
Forward 1 Forward 2 Reverse 1 Reverse 2
y = 1.0053x - 122.23
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_2
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Praktikum Seismik Refraksi Metode Plus Minus
LINE HANDARU_2
SP Elev X-loc Y-Loc Depth
The spread contains 2 shotpoints and 25 geophones
1 0 2.5 100 0
2 0 117.5 100 0
Geo Elev X-loc Y-Loc SP 1 SP 2 Forward-ms Reverse-ms 2x-ms Tminus-ms Tplus-ms H
1 0 0 100 8.33 150.54 27.047 150.54 0 -123.493 27.59875 -4.34103
2 0 5 100 8.33 145.93 32.3805 145.93 10 -113.5495 28.32225 -4.45483
3 0 10 100 25 142.2 37.714 142.2 20 -104.486 29.92575 -4.70705
4 0 15 100 41.67 137.46 43.0475 137.46 30 -94.4125 30.51925 -4.8004
5 0 20 100 50.61 132.31 50.61 132.31 40 -81.7 32.93175 -5.179866 0 25 100 57.49 127.27 57.49 127.27 50 -69.78 34.77175 -5.46928
7 0 30 100 59.43 119.88 59.43 119.88 60 -60.45 29.32175 -4.61204
8 0 35 100 65.29 115.66 65.29 115.66 70 -50.37 30.96175 -4.87
9 0 40 100 68.01 109.24 68.01 109.24 80 -41.23 27.26175 -4.28802
10 0 45 100 75.63 106.11 75.63 106.11 90 -30.48 31.75175 -4.99426
11 0 50 100 78.02 98.24 78.02 98.24 100 -20.22 26.27175 -4.13231
12 0 55 100 84.04 95.33 84.04 95.33 110 -11.29 29.38175 -4.62148
13 0 60 100 88.87 89.93 88.87 89.93 120 -1.06 28.81175 -4.53182
14 0 65 100 95.34 86.22 95.34 86.22 130 9.12 31.57175 -4.96595
15 0 70 100 99.25 79.56 99.25 79.56 140 19.69 28.82175 -4.5334
16 0 75 100 103.61 74.94 103.61 74.94 150 28.67 28.56175 -4.4925
17 0 80 100 109.5 71.84 109.5 71.84 160 37.66 31.35175 -4.93134
18 0 85 100 117.13 71.42 117.13 71.42 170 45.71 38.56175 -6.06541
19 0 90 100 126.1 74.89 126.1 74.89 180 51.21 51.00175 -8.02211
20 0 95 100 137.92 65.46 137.92 65.46 190 72.46 53.39175 -8.39803
21 0 100 100 142.32 51.97 142.32 51.97 200 90.35 44.30175 -6.96826
22 0 105 100 137.2 41.67 137.2 48.8745 210 88.3255 36.08625 -5.67604
23 0 110 100 140.91 25 140.91 44.059 220 96.851 34.98075 -5.50215
24 0 115 100 145.66 8.33 145.66 39.2435 230 106.4165 34.91525 -5.49185
25 0 120 100 150.54 8.33 150.54 34.428 240 116.112 34.97975 -5.50199
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Line Handaru_3
Equation Line 3 Velocity Line 3 Source to Source Time Line 3
Direct Forward y = 3.334x - 8.34 V1 Forward 299.940012 Forward 153.74375
Refract Forward y = 1.0317x + 32.519 V1 Reverse 299.940012 Reverse 152.0735
Direct Reverse y = -3.334x + 391.74 V1 rata-rata 299.940012 Average 152.908625
Refract Reverse y = -0.9906x +154.55 V2 1008.572869
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-4
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0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalaman
(m)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_3
Host
Interface
y = 3.334x - 8.34
y = 1.0317x + 32.519
y = -3.334x + 391.74
y = -0.9906x + 154.55
0
20
40
60
80
100
120
140
160
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_3
Forward 1 Forward 2 Reverse 1 Reverse 2
y = 0.9915x - 119.85
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_3
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Praktikum Seismik Refraksi Metode Plus Minus
LINE HANDARU_3
SP Elev X-loc Y-Loc Depth
The spread contains 2 shotpoints and 25 geophones
1 0 2.5 80 0
2 0 117.5 80 0
Geo Elev X-loc Y-Loc SP 1 SP 2 Forward-ms Reverse-ms 2x-ms Tminus-ms Tplus-ms H
1 0 0 80 8.33 150.51 32.519 150.51 0 -117.991 30.120375 -4.73121
2 0 5 80 8.33 145.9 37.6775 145.9 10 -108.2225 30.668875 -4.81737
3 0 10 80 25 142.17 42.836 142.17 20 -99.334 32.097375 -5.04175
4 0 15 80 41.67 136.44 47.9945 136.44 30 -88.4455 31.525875 -4.95198
5 0 20 80 48.84 130.32 48.84 130.32 40 -81.48 26.251375 -4.123486 0 25 80 55.23 126.79 55.23 126.79 50 -71.56 29.111375 -4.57272
7 0 30 80 58.91 120.75 58.91 120.75 60 -61.84 26.751375 -4.20202
8 0 35 80 65.06 119.33 65.06 119.33 70 -54.27 31.481375 -4.94499
9 0 40 80 73.56 124.24 73.56 124.24 80 -50.68 44.891375 -7.05139
10 0 45 80 86.61 121.82 86.61 121.82 90 -35.21 55.521375 -8.72112
11 0 50 80 96.76 115.78 96.76 115.78 100 -19.02 59.631375 -9.36671
12 0 55 80 100.69 106.42 100.69 106.42 110 -5.73 54.201375 -8.51378
13 0 60 80 101.99 94.63 101.99 94.63 120 7.36 43.711375 -6.86604
14 0 65 80 98.46 86.26 98.46 86.26 130 12.2 31.811375 -4.99683
15 0 70 80 100.08 79.69 100.08 79.69 140 20.39 26.861375 -4.2193
16 0 75 80 104.28 75.15 104.28 75.15 150 29.13 26.521375 -4.16589
17 0 80 80 110.03 72.31 110.03 72.31 160 37.72 29.431375 -4.62299
18 0 85 80 118.01 77.22 118.01 77.22 170 40.79 42.321375 -6.64771
19 0 90 80 130.9 72.89 130.9 72.89 180 58.01 50.881375 -7.99228
20 0 95 80 140.66 60.24 140.66 60.24 190 80.42 47.991375 -7.53833
21 0 100 80 136.09 51.32 136.09 51.32 200 84.77 34.501375 -5.41937
22 0 105 80 136.83 41.67 136.83 50.537 210 86.293 34.458375 -5.41261
23 0 110 80 140.88 25 140.88 45.584 220 95.296 33.555375 -5.27077
24 0 115 80 145.64 8.33 145.64 40.631 230 105.009 33.362375 -5.24046
25 0 120 80 150.51 8.33 150.51 35.678 240 114.832 33.279375 -5.22742
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Praktikum Seismik Refraksi Metode Plus Minus
Line Handaru_4
Equation Line 4 Velocity Line 4 Source to Source Time Line 4
Direct Forward y = 3.334x - 8.34 V1 Forward 299.940012 Forward 157.1415
Refract Forward y = 0.9874x + 41.122 V1 Reverse 299.940012 Reverse 158.23475
Direct Reverse y = -3.334x + 391.74 V1 rata-rata 299.940012 Average 157.688125
Refract Reverse y = -1.0101x +160.76 V2 1038.20598
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0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalaman(m
)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_4
Host
Interface
y = 3.334x - 8.34
y = 0.9874x + 41.122
y = -3.334x + 391.74
y = -1.0101x + 160.76
0
50
100
150
200
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_4
Forward 1 Forward 2 Reverse 1 Reverse 2
y = 0.9632x - 115.27
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_4
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Praktikum Seismik Refraksi Metode Plus Minus
LINE HANDARU_4
SP Elev X-loc Y-Loc Depth
The spread contains 2 shotpoints and 25 geophones
1 0 2.5 60 0
2 0 117.5 60 0
Geo Elev X-loc Y-Loc SP 1 SP 2 Forward-ms Reverse-ms 2x-ms Tminus-ms Tplus-ms H
1 0 0 60 8.33 151.14 41.122 151.14 0 -110.018 34.573875 -5.41599
2 0 5 60 8.33 146.54 46.059 146.54 10 -100.481 34.910875 -5.46878
3 0 10 60 25 142.74 50.996 142.74 20 -91.744 36.047875 -5.64689
4 0 15 60 41.67 139.02 55.933 139.02 30 -83.087 37.264875 -5.83753
5 0 20 60 52.35 136.95 52.35 136.95 40 -84.6 31.611875 -4.951996 0 25 60 60.15 142.2 60.15 142.2 50 -82.05 44.661875 -6.99627
7 0 30 60 72.89 137.92 72.89 137.92 60 -65.03 53.121875 -8.32153
8 0 35 60 84.5 130.45 84.5 130.45 70 -45.95 57.261875 -8.97006
9 0 40 60 86.59 123.41 86.59 123.41 80 -36.82 52.311875 -8.19464
10 0 45 60 89.27 116.85 89.27 116.85 90 -27.58 48.431875 -7.58684
11 0 50 60 92.48 111.07 92.48 111.07 100 -18.59 45.861875 -7.18425
12 0 55 60 96.51 107.09 96.51 107.09 110 -10.58 45.911875 -7.19208
13 0 60 60 102.13 102.24 102.13 102.24 120 -0.11 46.681875 -7.3127
14 0 65 60 107.98 97.7 107.98 97.7 130 10.28 47.991875 -7.51792
15 0 70 60 112.59 96.77 112.59 96.77 140 15.82 51.671875 -8.09439
16 0 75 60 121.95 89.4 121.95 89.4 150 32.55 53.661875 -8.40612
17 0 80 60 125.58 82.89 125.58 82.89 160 42.69 50.781875 -7.95497
18 0 85 60 128.51 78.69 128.51 78.69 170 49.82 49.511875 -7.75602
19 0 90 60 133.51 73.31 133.51 73.31 180 60.2 49.131875 -7.6965
20 0 95 60 141.17 61.17 141.17 61.17 190 80 44.651875 -6.99471
21 0 100 60 137.49 51.13 137.49 51.13 200 86.36 30.931875 -4.84547
22 0 105 60 136.7 41.67 136.7 54.6995 210 82.0005 33.711375 -5.28088
23 0 110 60 141.12 25 141.12 49.649 220 91.471 33.080875 -5.18211
24 0 115 60 146.25 8.33 146.25 44.5985 230 101.6515 33.160375 -5.19457
25 0 120 60 151.14 8.33 151.14 39.548 240 111.592 32.999875 -5.16942
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Line Handaru_5
Equation Line 5 Velocity Line 5 Source to Source Time Line 5
Direct Forward y = 3.334x - 8.34 V1 Forward 299.94 Forward 154.4725
Refract Forward y = 1.0382x + 32.484 V1 Reverse 299.94 Reverse 152.114
Direct Reverse y = -3.334x + 391.74 V1 rata-rata 299.94 Average 153.29325
Refract Reverse y = -0.9904x +154.59 V2 1005.328
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-5
-4-3
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0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalaman(m
)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_5
Host
Interface
y = 3.334x - 8.34
y = 1.0382x + 32.484
y = -3.334x + 391.74
y = -0.9904x + 154.59
0
20
40
60
80
100
120
140
160
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_5
Forward 1 Forward 2 Reverse 1 Reverse 2
y = 0.9947x - 119.95
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_5
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Praktikum Seismik Refraksi Metode Plus Minus
Line Handaru_6
Equation Line 6 Velocity Line 6 Source to Source Time Line 6
Direct Forward y = 3.334x - 8.34 V1 Forward 299.94 Forward 148.26875
Refract Forward y = 0.9689x +34.423 V1 Reverse 299.94 Reverse 152.7565
Direct Reverse y = -3.334x + 391.74 V1 rata-rata 299.94 Average 150.51263
Refract Reverse y = -1.0694x +155.43 V2 990.8839
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-8
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-5
-4
-3
-2
-1
0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalaman(m)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_6
Host
Interface
y = 1.0092x - 119.39
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_6
y = 3.334x - 8.34
y = 0.9689x + 34.423
y = -3.334x + 391.74
y = -1.0694x + 155.43
0
20
40
60
80
100
120
140
160
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_6
Forward 1 Forward 2 Reverse 2 Reverse 2
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Praktikum Seismik Refraksi Metode Plus Minus
LINE HANDARU_6
SP Elev X-loc Y-Loc Depth
The spread contains 2 shotpoints and 25 geophones
1 0 2.5 20 0
2 0 117.5 20 0
Geo Elev X-loc Y-Loc SP 1 SP 2 Forward-ms Reverse-ms 2x-ms Tminus-ms Tplus-ms H
1 0 0 20 8.33 150.93 34.423 150.93 0 -116.507 34.840375 -5.4822
2 0 5 20 8.33 146.37 39.2675 146.37 10 -107.1025 35.124875 -5.52697
3 0 10 20 25 141.71 44.112 141.71 20 -97.598 35.309375 -5.556
4 0 15 20 41.67 135.95 48.9565 135.95 30 -86.9935 34.393875 -5.41195
5 0 20 20 48.23 132.12 48.23 132.12 40 -83.89 29.837375 -4.694976 0 25 20 56.08 138.66 56.08 138.66 50 -82.58 44.227375 -6.95927
7 0 30 20 70.3 134.41 70.3 134.41 60 -64.11 54.197375 -8.52807
8 0 35 20 83.26 122.32 83.26 122.32 70 -39.06 55.067375 -8.66496
9 0 40 20 78.86 113.09 78.86 113.09 80 -34.23 41.437375 -6.52025
10 0 45 20 78.88 104.18 78.88 104.18 90 -25.3 32.547375 -5.12139
11 0 50 20 79.61 97.04 79.61 97.04 100 -17.43 26.137375 -4.11277
12 0 55 20 84.73 93.66 84.73 93.66 110 -8.93 27.877375 -4.38656
13 0 60 20 90.89 90.27 90.89 90.27 120 0.62 30.647375 -4.82243
14 0 65 20 97.27 84.22 97.27 84.22 130 13.05 30.977375 -4.87435
15 0 70 20 98.36 76.57 98.36 76.57 140 21.79 24.417375 -3.84212
16 0 75 20 103.52 72.82 103.52 72.82 150 30.7 25.827375 -4.06399
17 0 80 20 110.19 70.21 110.19 70.21 160 39.98 29.887375 -4.70284
18 0 85 20 118.11 67.37 118.11 67.37 170 50.74 34.967375 -5.50219
19 0 90 20 123.05 60.38 123.05 60.38 180 62.67 32.917375 -5.17962
20 0 95 20 126.61 55.2 126.61 55.2 190 71.41 31.297375 -4.9247
21 0 100 20 132.5 50.69 132.5 50.69 200 81.81 32.677375 -5.14185
22 0 105 20 136.5 41.67 136.5 43.143 210 93.357 29.130375 -4.58372
23 0 110 20 140.93 25 140.93 37.796 220 103.134 28.213375 -4.43943
24 0 115 20 145.93 8.33 145.93 32.449 230 113.481 27.866375 -4.38483
25 0 120 20 150.93 8.33 150.93 27.102 240 123.828 27.519375 -4.33023
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Praktikum Seismik Refraksi Metode Plus Minus
Line Handaru_7
Equation Line 7 Velocity Line 7 Source to Source Time Line 7
Direct Forward y = 3.334x - 8.34 V1 Forward 299.94 Forward 145.02875
Refract Forward y = 0.9165x + 37.34 V1 Reverse 300.8424 Reverse 154.7315
Direct Reverse y = -3.324x + 390.61 V1 rata-rata 300.3912 Average 149.880125
Refract Reverse y = -1.1234x +157.54 V2 987.4593
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0 10 20 30 40 50 60 70 80 90 100 110 120
Kedalaman(m)
Jarak (m)
Model Lapisan Lapuk
Line Handaru_7
Host
Interface
y = 3.334x - 8.34
y = 0.9165x + 37.34
y = -3.324x + 390.61
y = -1.1234x + 157.54
0
20
40
60
80
100
120
140
160
0 50 100 150
TravelTime(ms)
X-Loc (m)
Grafik T-X
Line Handaru_7
Forward 1 Forward 2 Reverse 1 Reverse 2
y = 1.0127x - 118.46
-150
-100
-50
0
50
100
150
0 50 100 150 200 250 300
Tminus(ms)
2X (m)
Grafik T_minus vs 2X
Line Handaru_7
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Praktikum Seismik Refraksi Metode Plus Minus
LINE HANDARU_7
SP Elev X-loc Y-Loc Depth
The spread contains 2 shotpoints and 25 geophones
1 0 2.5 0 0
2 0 117.5 0 0
Geo Elev X-loc Y-Loc SP 1 SP 2 Forward-ms Reverse-ms 2x-ms Tminus-ms Tplus-ms H
1 0 0 0 8.33 151.17 37.34 151.17 0 -113.83 38.629875 -6.0907
2 0 5 0 8.33 146.83 41.9225 146.83 10 -104.9075 38.872375 -6.12893
3 0 10 0 25 142.63 46.505 142.63 20 -96.125 39.254875 -6.18924
4 0 15 0 41.67 138.07 51.0875 138.07 30 -86.9825 39.277375 -6.19279
5 0 20 0 51.45 144.68 51.45 144.68 40 -93.23 46.249875 -7.292136 0 25 0 65.51 140.15 65.51 140.15 50 -74.64 55.779875 -8.79471
7 0 30 0 80.12 128.32 80.12 128.32 60 -48.2 58.559875 -9.23302
8 0 35 0 75.52 119.09 75.52 119.09 70 -43.57 44.729875 -7.05247
9 0 40 0 75.5 111.75 75.5 111.75 80 -36.25 37.369875 -5.89204
10 0 45 0 78.67 104.18 78.67 104.18 90 -25.51 32.969875 -5.1983
11 0 50 0 79.8 97.04 79.8 97.04 100 -17.24 26.959875 -4.25071
12 0 55 0 84.99 93.65 84.99 93.65 110 -8.66 28.759875 -4.53451
13 0 60 0 91.36 87.18 91.36 87.18 120 4.18 28.659875 -4.51875
14 0 65 0 91 79.08 91 79.08 130 11.92 20.199875 -3.18488
15 0 70 0 99.11 77.69 99.11 77.69 140 21.42 26.919875 -4.2444
16 0 75 0 102 70 102 70 150 32 22.119875 -3.4876
17 0 80 0 109.35 69.46 109.35 69.46 160 39.89 28.929875 -4.56132
18 0 85 0 116.52 63 116.52 63 170 53.52 29.639875 -4.67326
19 0 90 0 117.88 55.62 117.88 55.62 180 62.26 23.619875 -3.7241
20 0 95 0 123.63 52.62 123.63 52.62 190 71.01 26.369875 -4.15769
21 0 100 0 130.73 48.24 130.73 48.24 200 82.49 29.089875 -4.58654
22 0 105 0 133.69 41.57 133.69 39.583 210 94.107 23.392875 -3.68831
23 0 110 0 140.23 25 140.23 33.966 220 106.264 24.315875 -3.83384
24 0 115 0 146.4 8.33 146.4 28.349 230 118.051 24.868875 -3.92103
25 0 120 0 151.4 8.33 151.4 22.732 240 128.668 24.251875 -3.82375
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Praktikum Seismik Refraksi Metode Plus Minus
Data Ploting Kontur
X-loc Y-Loc H X-loc Y-Loc H X-loc Y-Loc H X-loc Y-Loc H
0 120 -4.628621 0 100 -4.34103 0 80 -4.73121 0 60 -5.41599
5 120 -4.661096 5 100 -4.45483 5 80 -4.81737 5 60 -5.46878
10 120 -4.624375 10 100 -4.70705 10 80 -5.04175 10 60 -5.64689
15 120 -4.625397 15 100 -4.8004 15 80 -4.95198 15 60 -5.83753
20 120 -5.302499 20 100 -5.17986 20 80 -4.12348 20 60 -4.95199
25 120 -5.835624 25 100 -5.46928 25 80 -4.57272 25 60 -6.99627
30 120 -5.297781 30 100 -4.61204 30 80 -4.20202 30 60 -8.32153
35 120 -4.363631 35 100 -4.87 35 80 -4.94499 35 60 -8.97006
40 120 -4.553921 40 100 -4.28802 40 80 -7.05139 40 60 -8.19464
45 120 -4.319597 45 100 -4.99426 45 80 -8.72112 45 60 -7.58684
50 120 -4.608963 50 100 -4.13231 50 80 -9.36671 50 60 -7.18425
55 120 -5.598155 55 100 -4.62148 55 80 -8.51378 55 60 -7.19208
60 120 -5.370122 60 100 -4.53182 60 80 -6.86604 60 60 -7.3127
65 120 -4.632553 65 100 -4.96595 65 80 -4.99683 65 60 -7.51792
70 120 -5.077611 70 100 -4.5334 70 80 -4.2193 70 60 -8.09439
75 120 -4.637271 75 100 -4.4925 75 80 -4.16589 75 60 -8.40612
80 120 -5.005269 80 100 -4.93134 80 80 -4.62299 80 60 -7.95497
85 120 -7.019824 85 100 -6.06541 85 80 -6.64771 85 60 -7.75602
90 120 -8.060914 90 100 -8.02211 90 80 -7.99228 90 60 -7.6965
95 120 -7.14249 95 100 -8.39803 95 80 -7.53833 95 60 -6.99471
100 120 -5.04144 100 100 -6.96826 100 80 -5.41937 100 60 -4.84547
105 120 -5.387343 105 100 -5.67604 105 80 -5.41261 105 60 -5.28088
110 120 -5.336939 110 100 -5.50215 110 80 -5.27077 110 60 -5.18211
115 120 -5.335288 115 100 -5.49185 115 80 -5.24046 115 60 -5.19457
120 120 -5.352509 120 100 -5.50199 120 80 -5.22742 120 60 -5.16942
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Praktikum Seismik Refraksi Metode Plus Minus
Data Ploting Kontur
X-loc Y-Loc H X-loc Y-Loc H X-loc Y-Loc H
0 40 -4.732756 0 20 -5.4822 0 0 -6.0907
5 40 -4.824046 5 20 -5.52697 5 0 -6.12893
10 40 -5.066177 10 20 -5.556 10 0 -6.18924
15 40 -5.005055 15 20 -5.41195 15 0 -6.19279
20 40 -4.216754 20 20 -4.69497 20 0 -7.29213
25 40 -5.616747 25 20 -6.95927 25 0 -8.79471
30 40 -7.97521 30 20 -8.52807 30 0 -9.23302
35 40 -8.166903 35 20 -8.66496 35 0 -7.05247
40 40 -6.895753 40 20 -6.52025 40 0 -5.89204
45 40 -4.813833 45 20 -5.12139 45 0 -5.198350 40 -3.808226 50 20 -4.11277 50 0 -4.25071
55 40 -4.032916 55 20 -4.38656 55 0 -4.53451
60 40 -4.138191 60 20 -4.82243 60 0 -4.51875
65 40 -4.498009 65 20 -4.87435 65 0 -3.18488
70 40 -5.648172 70 20 -3.84212 70 0 -4.2444
75 40 -7.558825 75 20 -4.06399 75 0 -3.4876
80 40 -9.065665 80 20 -4.70284 80 0 -4.56132
85 40 -9.117516 85 20 -5.50219 85 0 -4.67326
90 40 -7.665671 90 20 -5.17962 90 0 -3.7241
95 40 -5.916858 95 20 -4.9247 95 0 -4.15769
100 40 -4.978815 100 20 -5.14185 100 0 -4.58654
105 40 -5.344605 105 20 -4.58372 105 0 -3.68831
110 40 -5.250015 110 20 -4.43943 110 0 -3.83384
115 40 -5.23713 115 20 -4.38483 115 0 -3.92103
120 40 -5.244672 120 20 -4.33023 120 0 -3.82375
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Praktikum Seismik Refraksi Metode Plus Minus
Hasil Ploting
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Praktikum Seismik Refraksi Metode Plus Minus
Geomorfologi Sungai
Hasil ploting kontur dan 3D surface memperlihatkan hasil seperti diatas, diama
sungai yang terbentuk adalah sungai dengan stadia dewasa, yang ditandai dengan bentuksungai yang berliku-liku. Bentuk sungai yang berliku-liku ini menandakan bahwa energy
aliran sungai mulai melemah dan kemungkinan terbentuk didaerah yang memiliki
topografi yang relative datar.
Anatomi Sungai
Sungai yang terbentuk tidak memiliki anatomi yang terlalu mencolok seperti
Chanel bar ataupun Point bar. Itu terlihat dari pola kontur yang menunjukkan tidak
terdapat pola kontur yang memiliki ketinggian tertentu di dalam pola aliran sungai,
sedangkan pola kontur yang lain cenderung merapat sekitar tepi-tepi sungai. Jika dilihat
lebih dalam, pola aliran sungai ini tidak menunjukkan pola dasar sungai yang datar,namun cenderung membentuk cekungan atau bentuk V juga terdapat beberapa tempat
dasar sungai yang memiliki kedalaman yang lebih dalam disbanding daerah sekitarnya.
Lebar dan Kedalaman Sungai
No. Line Lebar Dalam
1 20 3
2 20 3.5
3 40 5.54 35 3.5
5 35 4
6 30 3.5
7 20 3
Rata 28.57143 3.714286
Dari hasil permodelan lapisan dari line 1 hingga line 7 menunjukkan variasi lebar
dan kedalaman yang tidak terlalu terpaut jauh, demgan rata-rata lebar sungai adalah 28.57
meter dan kedalaman sungai sekitar 3.71 meter.
DAFTAR PUSTAKA
Asisten GEM. 2014. Pemodelan Maju dan Koreksi Topografi. FMIPA Universitas
Gadjah Mada.