PERBANDINGAN KARAKTERISTIK SUB-DAS CIKERUH PADA BATUAN BERUMUR TERSIER DAN BATUAN KUARTER DAERAH TEGALLAJA KABUPATEN SUBANG, PROVINSI JAWABARAT.
DAFTAR ISI
Halaman
SARI .................................................................................................................................
i
ABSTRACT ......................................................................................................................
ii
KATA PENGANTAR .....................................................................................................
iii
DAFTAR ISI ....................................................................................................................
v
DAFTAR GAMBAR .......................................................................................................
vii
DAFTAR TABEL............................................................................................................
viii
DAFTAR LAMPIRAN ...................................................................................................
ix
BAB I
PENDAHULUAN....................................................................................
1
1.1
Latar Belakang .........................................................................................
1
1.2
Permasalahan.............................................................................................
2
1.3
Maksud dan Tujuan Penelitian ..................................................................
3
1.4
Letak dan Aksesibilitas Daerah Penelitian...............................................
3
TINJAUAN PUSTAKA ..........................................................................
5
Geologi Umum Daerah Penelitian ............................................................
5
2.1.1 Fisiografi Regional ........................................................................
5
2.1.2 Stratigrafi Daerah Penelitian .........................................................
7
2.1.3 Struktur Geologi Regional .............................................................
8
Daerah Aliran Sungai (DAS) ....................................................................
11
2.2.1 Linear Morfometri .........................................................................
13
2.2.2 Areal Morfometri...........................................................................
16
2.2.3 Relief Morfometri..........................................................................
17
2.3
Sistem Informasi Geografis (SIG) ............................................................
18
2.4
Pengindraan Jauh ......................................................................................
21
METODE PENELITIAN .......................................................................
22
3.1
Objek Penelitian ........................................................................................
22
3.2
Peralatan dan Data .....................................................................................
22
BAB II
2.1
2.2
BAB III
v
3.3
Langkah-Langkah Penelitian.....................................................................
24
3.3.1 Tahap Persiapan dan Pengumpulan Data .....................................
24
3.3.2 Tahap Analisis Data .....................................................................
25
3.2.2.1 Analisis Kondisi Geologi dan Geomorfologi ....................
25
3.2.2.2 Analisis Karakteristik Morfometri ....................................
29
3.3.2.3 Analisis Uji Statistika Terhadap Karakteristik Morfometri 31
3.3.3 Tahap Pembahasan dan Penyusunan Laporan ...............................
33
HASIL PENELITIAN.............................................................................
36
4.1
Karakteristik Morfologi Daerah Penelitian ...............................................
36
4.2
Geologi Daerah Penelitian.........................................................................
41
4.2.1 Satuan Batupasir Perselingan Batulempung ..................................
41
4.2.2 Satuan Breksi Vulkanik .................................................................
43
4.2.3 Satuan Batupasir ............................................................................
45
4.2.4 Satuan Batulempung......................................................................
46
Karakteristik Morfometri Sub DAS ..........................................................
47
4.3.1 Orde Sungai dan Linear Morfometri .............................................
47
4.3.2 Areal Morfometri...........................................................................
50
BAB IV
4.3
4.3.3 Pengujian Statistik Data Drainage Density (D d ) dan Bifurcation
4.4
BAB V
Ratio (Rb) ......................................................................................
52
4.3.3.1 Pengujian Statistik Data D d ...............................................
52
4.3.3.2 Pengujian Statistik Data R b ..............................................
55
Morfometri Daerah Penelitian ...................................................................
57
4.4.1 Data Drainage Density (D d ) .........................................................
57
4.4.2 Data Bifurcation Ratio (R b )...........................................................
59
RANGKUMAN .......................................................................................
63
DAFTAR PUSTAKA ......................................................................................................
x
LAMPIRAN 1 PERHITUNGAN LINEAR & AREAL MORFOMETRI ..............
65
LAMPIRAN 2 PERHITUNGAN UJI STATISTIK NILAI D d DAN R b ................
71
vi
DAFTAR GAMBAR
Gambar
Halaman
1.1
Peta lokasi daerah penelitian ................................................................
4
2.1
Fisiografi Jawa Tengah (Van Bemmelen, 1949) ..................................
6
2.2
Peta Geologi Regional Daerah Penelitian (Peta Geologi Skala
1:25.000, Lembar Salem dan Cibingbin (Rania Rahmi S, 2012) .........
8
2.3
Ilustrasi gambar daerah aliran sungai (DAS) .......................................
11
2.4
Sistematika pembagian orde sungai :A. Horton (1945), B. Strahler
(1952),dan C. Shreve (1967) ................................................................
14
2.5
Pembentukan Percabangan Sungai (Ritter et al, 1978) ........................
16
2.6
Konsep overlay data dalam SIG (Sukiyah, 2002) ................................
19
3.1
Pola pengaliran modifikasi menurut (Howard, 1967). .........................
27
3.2
Diagram Alir Penelitian ........................................................................
34
4.1
Kenampakan 3 dimensi Satuan Geomorfologi Daerah Penelitian .......
37
4.2
Kenampakan satuan pedataran denudasional .......................................
38
4.3
Kenampakan satuan perbukitan struktural landai.................................
39
4.4
Kenampakan satuan perbukitan struktural agak curam ........................
40
4.5
Kenampakan satuan perbukitan tinggi vulkanik curam .......................
41
4.6
Kenampakan satuan batupasir perselingan batulempung .....................
42
4.7
Kenampakan struktur sedimen pada satuan batupasir perselingan
batulempung .........................................................................................
43
4.8
Kenampakan satuan breksi vulkanik ....................................................
44
4.9
Kenampakan satuan batupasir ..............................................................
45
4.10
Kenampakan satuan batulempung ........................................................
46
4.11
Grafik Perbandingan antara total panjang sungai (Lu ) dengan jumlah
4.12
segmen sungai pada Sub DAS Bentarsari ............................................
49
Pola Daerah Aliran Sungai dan sistem order sungai pada daerah penelitian..
50
vii
4.13
Grafik Perbandingan antara Luas sub DAS (A) dengan Nilai
Perimeter pada Sub DAS Cimanuk ......................................................
51
DAFTAR TABEL
Tabel
Halaman
3.1
Karakteristik Pola Pengaliran ( Howard, 1967)....................................
3.2
Hubungan ketinggian absolut dengan morfografi (sumber : Van
26
Zuidam, 1985) ......................................................................................
27
3.3
Klasifikasi Kemiringan Lereng Berdasarkan van Zuidam (1985)..................
28
3.4
Klasifikasi tekstur bentangalam berdasarkan kerapatan pengaliran
(Sukiyah, 2009) ....................................................................................
3.5
31
Nilai Kritis L dari Uji Liliefors untuk keperluan Uji Normalitas
(John Wiley & Sons, 1973) ..................................................................
32
3.6
Rumus-Rumus Uji Statistik ..................................................................
33
4.1
Uji Normalitas Nilai Drainage Density (D d ) .......................................
52
4.2
Uji Homogentias Nilai Drainage Density (D d ) ....................................
53
4.3
Uji Beda Nilai Drainage Density (D d ) ................................................
54
4.4
Uji Normalitas Nilai Biforcation Ratio (R b ) ........................................
55
4.5
Uji Homogen Nilai Bifurcation Ratio (R b ) ..........................................
55
4.6
Uji Beda Nilai Biforcation Ratio (R b ) ..................................................
56
4.7
Nilai Drainage Density (D d ) sub DAS pada Blok Tmb, Tmp, dan
Tpl.........................................................................................................
58
4.8
Bifurcation Ratio (R b ) sub DAS pada Blok Tmb, Tmp, dan Tpl .........
60
4.9
Hasil dari Morfologi dan Morfometri daerah penelitian ......................
62
viii
DAFTAR LAMPIRAN
LAMPIRAN 1
PERHITUNGAN LINEAR & AREAL MORFOMETRI
LAMPIRAN 2
PERHITUNGAN UJI STATISTIK TERHADAP LINEAR &
AREAL MORFOMETRI
LEMBAR PETA 1
PETA DAS DAN SUB DAS CIPELES DAN SEKITARNYA
LEMBAR PETA 2
MODIFIKASI PETA GEOLOGI REGIONAL
ix
Halaman
SARI .................................................................................................................................
i
ABSTRACT ......................................................................................................................
ii
KATA PENGANTAR .....................................................................................................
iii
DAFTAR ISI ....................................................................................................................
v
DAFTAR GAMBAR .......................................................................................................
vii
DAFTAR TABEL............................................................................................................
viii
DAFTAR LAMPIRAN ...................................................................................................
ix
BAB I
PENDAHULUAN....................................................................................
1
1.1
Latar Belakang .........................................................................................
1
1.2
Permasalahan.............................................................................................
2
1.3
Maksud dan Tujuan Penelitian ..................................................................
3
1.4
Letak dan Aksesibilitas Daerah Penelitian...............................................
3
TINJAUAN PUSTAKA ..........................................................................
5
Geologi Umum Daerah Penelitian ............................................................
5
2.1.1 Fisiografi Regional ........................................................................
5
2.1.2 Stratigrafi Daerah Penelitian .........................................................
7
2.1.3 Struktur Geologi Regional .............................................................
8
Daerah Aliran Sungai (DAS) ....................................................................
11
2.2.1 Linear Morfometri .........................................................................
13
2.2.2 Areal Morfometri...........................................................................
16
2.2.3 Relief Morfometri..........................................................................
17
2.3
Sistem Informasi Geografis (SIG) ............................................................
18
2.4
Pengindraan Jauh ......................................................................................
21
METODE PENELITIAN .......................................................................
22
3.1
Objek Penelitian ........................................................................................
22
3.2
Peralatan dan Data .....................................................................................
22
BAB II
2.1
2.2
BAB III
v
3.3
Langkah-Langkah Penelitian.....................................................................
24
3.3.1 Tahap Persiapan dan Pengumpulan Data .....................................
24
3.3.2 Tahap Analisis Data .....................................................................
25
3.2.2.1 Analisis Kondisi Geologi dan Geomorfologi ....................
25
3.2.2.2 Analisis Karakteristik Morfometri ....................................
29
3.3.2.3 Analisis Uji Statistika Terhadap Karakteristik Morfometri 31
3.3.3 Tahap Pembahasan dan Penyusunan Laporan ...............................
33
HASIL PENELITIAN.............................................................................
36
4.1
Karakteristik Morfologi Daerah Penelitian ...............................................
36
4.2
Geologi Daerah Penelitian.........................................................................
41
4.2.1 Satuan Batupasir Perselingan Batulempung ..................................
41
4.2.2 Satuan Breksi Vulkanik .................................................................
43
4.2.3 Satuan Batupasir ............................................................................
45
4.2.4 Satuan Batulempung......................................................................
46
Karakteristik Morfometri Sub DAS ..........................................................
47
4.3.1 Orde Sungai dan Linear Morfometri .............................................
47
4.3.2 Areal Morfometri...........................................................................
50
BAB IV
4.3
4.3.3 Pengujian Statistik Data Drainage Density (D d ) dan Bifurcation
4.4
BAB V
Ratio (Rb) ......................................................................................
52
4.3.3.1 Pengujian Statistik Data D d ...............................................
52
4.3.3.2 Pengujian Statistik Data R b ..............................................
55
Morfometri Daerah Penelitian ...................................................................
57
4.4.1 Data Drainage Density (D d ) .........................................................
57
4.4.2 Data Bifurcation Ratio (R b )...........................................................
59
RANGKUMAN .......................................................................................
63
DAFTAR PUSTAKA ......................................................................................................
x
LAMPIRAN 1 PERHITUNGAN LINEAR & AREAL MORFOMETRI ..............
65
LAMPIRAN 2 PERHITUNGAN UJI STATISTIK NILAI D d DAN R b ................
71
vi
DAFTAR GAMBAR
Gambar
Halaman
1.1
Peta lokasi daerah penelitian ................................................................
4
2.1
Fisiografi Jawa Tengah (Van Bemmelen, 1949) ..................................
6
2.2
Peta Geologi Regional Daerah Penelitian (Peta Geologi Skala
1:25.000, Lembar Salem dan Cibingbin (Rania Rahmi S, 2012) .........
8
2.3
Ilustrasi gambar daerah aliran sungai (DAS) .......................................
11
2.4
Sistematika pembagian orde sungai :A. Horton (1945), B. Strahler
(1952),dan C. Shreve (1967) ................................................................
14
2.5
Pembentukan Percabangan Sungai (Ritter et al, 1978) ........................
16
2.6
Konsep overlay data dalam SIG (Sukiyah, 2002) ................................
19
3.1
Pola pengaliran modifikasi menurut (Howard, 1967). .........................
27
3.2
Diagram Alir Penelitian ........................................................................
34
4.1
Kenampakan 3 dimensi Satuan Geomorfologi Daerah Penelitian .......
37
4.2
Kenampakan satuan pedataran denudasional .......................................
38
4.3
Kenampakan satuan perbukitan struktural landai.................................
39
4.4
Kenampakan satuan perbukitan struktural agak curam ........................
40
4.5
Kenampakan satuan perbukitan tinggi vulkanik curam .......................
41
4.6
Kenampakan satuan batupasir perselingan batulempung .....................
42
4.7
Kenampakan struktur sedimen pada satuan batupasir perselingan
batulempung .........................................................................................
43
4.8
Kenampakan satuan breksi vulkanik ....................................................
44
4.9
Kenampakan satuan batupasir ..............................................................
45
4.10
Kenampakan satuan batulempung ........................................................
46
4.11
Grafik Perbandingan antara total panjang sungai (Lu ) dengan jumlah
4.12
segmen sungai pada Sub DAS Bentarsari ............................................
49
Pola Daerah Aliran Sungai dan sistem order sungai pada daerah penelitian..
50
vii
4.13
Grafik Perbandingan antara Luas sub DAS (A) dengan Nilai
Perimeter pada Sub DAS Cimanuk ......................................................
51
DAFTAR TABEL
Tabel
Halaman
3.1
Karakteristik Pola Pengaliran ( Howard, 1967)....................................
3.2
Hubungan ketinggian absolut dengan morfografi (sumber : Van
26
Zuidam, 1985) ......................................................................................
27
3.3
Klasifikasi Kemiringan Lereng Berdasarkan van Zuidam (1985)..................
28
3.4
Klasifikasi tekstur bentangalam berdasarkan kerapatan pengaliran
(Sukiyah, 2009) ....................................................................................
3.5
31
Nilai Kritis L dari Uji Liliefors untuk keperluan Uji Normalitas
(John Wiley & Sons, 1973) ..................................................................
32
3.6
Rumus-Rumus Uji Statistik ..................................................................
33
4.1
Uji Normalitas Nilai Drainage Density (D d ) .......................................
52
4.2
Uji Homogentias Nilai Drainage Density (D d ) ....................................
53
4.3
Uji Beda Nilai Drainage Density (D d ) ................................................
54
4.4
Uji Normalitas Nilai Biforcation Ratio (R b ) ........................................
55
4.5
Uji Homogen Nilai Bifurcation Ratio (R b ) ..........................................
55
4.6
Uji Beda Nilai Biforcation Ratio (R b ) ..................................................
56
4.7
Nilai Drainage Density (D d ) sub DAS pada Blok Tmb, Tmp, dan
Tpl.........................................................................................................
58
4.8
Bifurcation Ratio (R b ) sub DAS pada Blok Tmb, Tmp, dan Tpl .........
60
4.9
Hasil dari Morfologi dan Morfometri daerah penelitian ......................
62
viii
DAFTAR LAMPIRAN
LAMPIRAN 1
PERHITUNGAN LINEAR & AREAL MORFOMETRI
LAMPIRAN 2
PERHITUNGAN UJI STATISTIK TERHADAP LINEAR &
AREAL MORFOMETRI
LEMBAR PETA 1
PETA DAS DAN SUB DAS CIPELES DAN SEKITARNYA
LEMBAR PETA 2
MODIFIKASI PETA GEOLOGI REGIONAL
ix