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% Input data untuk file gambar
% % RGB=imread('Input_cba_355.png');
% I=rgb2gray(RGB); % convert the image to grey
% I2 = (imresize(I, [50 NaN])); %resize image
%FFT
A= fft2(double(MI)); % compute FFT of the grey image
M1=fftshift(A); % frequency scaling
%Plotting Frequency Spectrum
bin_vals = [0 : 100-1]; %N=matriks N_2 = ceil(100/2);
55
% Gaussian Filter Response Calculation [M, S]=size(MI); % image size
R=3; % filter size parameter (sigma) X=0:S-1;
R=5; % filter size parameter (sigma)
56
mesh(X2,Y2,Lo), colormap ('jet') %run ke 2 zlabel('Magnitude')
xlabel('Frequency (Hz)') ylabel('Frequency (Hz)');
title('Single-sided Magnitude spectrum;sigma 1');
57
58
% colorbar('SouthOutside') figure (5)
imagesc (B1)
title('low pass filtered;sigma 1.5','fontsize',10)
% colorbar('SouthOutside') figure (6)
imagesc (B2)
title('low pass filtered;sigma 3','fontsize',10)
% colorbar('SouthOutside') figure (7)
imagesc (B3)
title('low pass filtered;sigma5','fontsize',10)
% colorbar('SouthOutside')
Script 2. Specdecom Gaussian
59
KelompokStasiunZonaEastingNorthingLatitudeLongitudeElevasiGrav (miligal)Tide readingTide CorrectedDriftbacaan drift terkoreksi (Gdrift)GobsKoreksi LintanggNFAC (Free Air Corr)GteoritisCurvatureTerrain CorrectionFree Air AnomalyBourger CorrectionCBADensitasParasnis(0,04193*h)-TC(gob
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10249M6860059196253-7.26823112.684793101716.3-0.07035511740.5110.1437361740.367978107.2316978115.5676-8.33605643.08765978118.6553-0.01560.320258-5.24840640.99886976-5.927022.38280.099042973GB 10349M6859379195845-7.271921112.684191191713.9750.17125481737.9110.1526771737.759978105.1064978115.6516-10.545198745.866535978121.5181-0.02961.39513324-4.678663741.897852544-5.181382.3828-0.5984632497
Tabel 1. Hasil Perhitungan Koreksi
60
BIODATA PENULIS
Almira Mahsa, lahir di Surabaya pada 29 Oktober 1996 dan merupakan anak pertama dari 4 (empat) bersaudara dari Bapak Cahyo Eko Pratomo (Alm) dan Ibu Siti Noerdjannah. Penulis menempuh pendidikan di SD Muhammadiyah 4 Surabaya (2002-2008), SMP Muhammadiyah 1 Sidoarjo (2008-2011), dan SMA Muhammadiyah 2 Sidoarjo (2011-20014). Pada tahun 2014, penulis diterima berkuliah di Departemen Teknik Geofisika Institut Teknologi Sepuluh Nopember.
Selama menjadi mahasiswa penulis juga aktif dalam organisasi keprofesian diantaranya Staff Divisi PSDM HMTG ITS (2015-2016), Sekertaris Departemen divisi PSDM HMTG ITS (2016-2017), Kepala Divisi Akademika, Lembaga Dakwah Jurusan AL-ARDH Teknik Geofisika ITS (2016-2017), Ketua Divisi Riset dan Teknologi Himpunan Mahasiswa Geofisika Indonesia (2017-2018) dan juga menjadi Student Volunteer HAGI-IAGI-IATMI-IAFMI Join Convention Malang.
Selain itu penulis juga aktif dalam kegiatan pelatihan, field trip, dan penelitian diantaranya Petrophysics Training HMTG 2015, Petroleum Industrial Training UGM 2016, Basic Seismic Processing Training AAPG ITS 2016, Sepuluh Nopember Youth Camp, Field Camp Basic Petroleum Geology Kulonprogo, Geologi UGM 2017, Magnetotelluric Training- Himpunan Mahasiswa Geofisika Indonesia 2018,
Di bidang keilmiahan, penulis juga aktif mengikuti beberapa kegiatan diantaranya menjadi Poster Presenter pada 2nd South Asean Geosciences Student Conference 2016, Poster Presenter pada 6th ITB International Geothermal Workshop 2017, co-Author EAGE-HAGI 1st Asia Pacific meeting on Near Surface Geoscience & Engineering 2018 dan Oral Presenter pada 42nd Indonesian Petroleum Association Convention and Exhibition 2018, dan juga melakukan beberapa penelitian tentang Persebaran Air Lindi pada TPA Ngipik- Gresik, penelitian tentang Rock Physics evaluation Gunung Arjuno-Welirang, tim akuisisi metode gaya berat dan magnetik di Gunung Ijen. Penulis juga pernah menjadi Asisten Laboratorium Petrofisik (2015-2017) dan Asisten Laboratorium Geofisika Eksplorasi (2018).
Selama perkuliahaan penulis memiliki passion pada bidang keahlian panas bumi dan petrofisika.
Prestasi yang pernah diraih oleh penulis yakni Juara 1 Basket Putri pada Olimpiade FTSP 2015, Juara 1 Futsal Putri pada SPARTAN FTSP 2016, 8th Places
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Best menjadi Poster Presenter pada 2nd South Asean Geosciences Student Conference 2016, Juara 1 Futsal Putri pada Dies Natalies 57th ITS 2017.
Apabila ingin berdiskusi lebih dalam terkait Tugas Akhir atau hal yang lain, dapat menghubungi penulis melalui alamat email [email protected] serta melalui nomor telepon 085646087878. Sekian dan terima kasih.
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