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All Journal Jurnal Pendidikan Karakter Journal of Geoscience, Engineering, Environment, and Technology

Sudra Irawan, Sudra

Program Studi Teknik Geomatika Kelautan, Politeknik Negeri Batam

Author-ID : 571890

Earth & Planetary Sciences Education Engineering Environmental Science Physics

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Geology Structure Identification Using Pre-Stack Depth Migration (PSDM) Method of Tomography Result in North West Java Basin Irawan, Sudra; Lubis, Muhammad Zainuddin
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 2 (2017): JGEET Vol 02 No 02 : June (2017)
Publisher : UIR PRESS

North West Java Basin is a tertiary sedimentary basin which is located in the right of the western part of the Java island. North West Java Basin is geodynamic where currently located at the rear position of the path of the volcanic arc of Java that is the result of the India-Australia plate subduction to the south towards the Eurasian plate (Explanation of Sunda) in the north. Geology structure observation is difficult to be conducted at Quaternary volcanicfield due to the classical problem at tropical region. In the study interpretation of fault structures can be done on a cross-section of Pre-Stack Depth Migration (PSDM) used prayer namely Hardware Key Device, ie Central Processing Unit: RedHat Enterprise Linux AS 5.0, prayer Monitor 24-inch pieces, Server: SGI altix 450/SuSe Linux Enterprise Server 9.0, 32 GB, 32 X 2,6 GHz Procesor, network: Gigabyte 1 Gb/s, and the software used is paradigm, product: Seismic Processing and Imaging. The third fault obtained in this study in accordance with the geological information derived from previous research conducted by geologists. The second general direction is northwest-southeast direction represented by Baribis fault, fault-fault in the Valley Cimandiri and Gunung Walat. This direction is often known as the directions Meratus (Meratus Trend). Meratus directions interpreted as directions that follow the pattern of continuous arc Cretaceous age to Meratus in Kalimantan.

Using Side-Scan Sonar instrument to Characterize and map of seabed identification target in punggur sea of the Riau Islands, Indonesia. Lubis, Muhammad Zainuddin; Anurogo, Wenang; Khoirunnisa, Hanah; Irawan, Sudra; Gustin, Oktavianto; Roziqin, Arif
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 1 (2017): JGEET Vol 02 No 01 : March (2017)
Publisher : UIR PRESS

Punggur sea has many habitats, object, and structured of seabed with hight tide and wave. Side scan sonar is an underwater acoustic instrument for identification of seabed. This research aims to classify types of seabed and measure seabed identification into the sea water with grain size (dB), location, altitude (m) and target using side scan sonar instrument. This research also uses one types of side scan sonar in one places with 3 line of collecting data to get more variant seabed. Side scan sonar data of 20 km of side-scan sonar profiling (CM2, C-MAX Ltd, UK) with altitude max 20 m and a working acoustic frequency of 325 kHz with the zone is taken in the punggur sea (104Â°08.7102 E, 1Â°03.2448 N until 1Â°03.3977N 104Â°08.8133 E). The data side scan sonar processed using max view software to display the image of the seabed. Results of seabed imagery in the punggur sea on track 1 have Objects found on the ship coordinates 03.3101N 1 Â° and 104 Â° 08.7362 E with the highest gain value is 6 dB, altitude 18 m on ping 75. Linear regression has y = 0.7016x+12.952 with R2 = 0.4125 (41%). Track 2 has target 1 is the sunken object on the seabed, while objects in the form of sand can be seen clearly. Objects found on the sunken object coordinates 1Â°02.8143 N Â° and 104Â°08.5228 E with highest gain value is 9 dB with altitude 17.7 m and data ping 69. Linear regression has y = 0.2093+12.577 with R2 = 0.2093 (20%). Track 3 has Target 1 is the ship object on the seabed, while objects in the form of sand can be seen clearly. Objects found on the sunken object coordinates 1Â°02.5817 N and 104Â°08.7337 E with the highest gain value is 8 dB with altitude 16.5 m and data ping 3984. Linear regression has y = 0.5106x +12.84 with R2 = 0.5106 (51%). Track 1 has many targets identification results compared Track 2 and 3.

An Analysis of the Accuracy of Time Domain 3D Image Geology Model Resulted from PSTM and Depth Domain 3D Image Geology Model Resulted from PSDM in Oil and Gas Exploration Irawan, Sudra; Rokhayati, Yeni; Aji, Satriya Bayu
Journal of Geoscience, Engineering, Environment, and Technology Vol 4 No 1 (2019): JGEET Vol 04 No 01 : March (2019)
Publisher : UIR PRESS

This study aims to obtain a geological model which is close to the truth and compare accuracy between the time domain 3D image of the PSTM results with the depth domain 3D image of PSDM results. There are 3 parameters to determine the accuracy of an interval velocity model in the production of a geology model: depth gathering that is already flat, semblance that has concurred with zero residual move-out axes, and depth image which conforms to the marker (well seismic tie). The analytical method employed is Horizon Based Tomography, which is a method to correct the seismic wave travel time error along the analyzed horizon. Reducing errors in the travel time of the seismic wave will decrease depth errors. This improvement is expected to provide correct information about subsurface geological conditions. The results showed that the depth domain image generated by the PSDM process represents the actual geological model better than time domain image produced by the PSTM process, evidenced by the sharpening of the reflector continuity, reduction of pull-up effect, and high resolution.

EVALUASI IMPLEMENTASI PENDIDIKAN KARAKTER PADA PEMBELAJARAN FISIKA DI MAN YOGYAKARTA I Irawan, Sudra
Jurnal Pendidikan Karakter Vol. 7, No. 1 (2016)
Publisher : LPPM Universitas Negeri Yogyakarta

Abstrak: Penelitian ini bertujuan untuk mengevaluasi implementasi pendidikan karakter pada pembelajaran fisika di MAN Yogyakarta I. Jenis penelitian ini adalah penelitian evaluasi dengan menggunakan model CIPP (contexts, input, process, and product). Pengumpulan data dilakukan dengan teknik dokumentasi, tes, kuesioner, observasi, wawancara, dan triangulasi. Teknik analisis data menggunakan teknik analisis deskriptif kualitatif dan deskriptif kuantitatif. Hasil analisis deskriptif menunjukkan bahwa MAN Yogyakarta I baik (79,14%) dalam mengimpelemtasikan pendidikan karakter pada pembelajaran fisika yang dibuktikan dengan tumbuhnya 18 nilai karakter pada diri siswa. Hasil aspek-aspek implementasi, yaitu kesiapan guru fisika berkategori baik (71,14%) dengan iklim pembelajaran yang cukup kondusif, perencanaan pembelajaran fisika pada kategori sangat baik (81,59%), pelaksanaan pembelajaran fisika di kelas pada kategori baik (79,97%), pelaksanaan evaluasi pembelajaran fisika oleh guru pada kategori baik (81,25%), dan kinerja guru fisika pada kategori baik (81,16%). Kendala utama yang dihadapi berasal dari faktor guru. Alokasi jam pelajaran fisika yang ada pada kurikulum dinilai oleh guru kurang untuk menyampaikan materi pelajaran dan kegiatan eksperimen sehingga pilar karakter sulit dikembangkan oleh siswa. Kata Kunci: evaluasi, pendidikan karakter, pembelajaran fisika, MAN Yogyakarta I

Co-Authors Arif Roziqin, Arif Hanah Khoirunnisa, Hanah Muhammad Zainuddin Lubis Oktavianto Gustin Rokhayati, Yeni Satriya Bayu Aji, Satriya Bayu Wenang Anurogo, Wenang

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