{"id":9201,"date":"2010-04-16T14:19:18","date_gmt":"2010-04-16T14:19:18","guid":{"rendered":"https:\/\/www.its.ac.id\/news\/2010\/04\/16\/seminar-fmipa-ramalkan-tempat-gempa\/"},"modified":"2010-04-16T14:19:18","modified_gmt":"2010-04-16T14:19:18","slug":"seminar-fmipa-ramalkan-tempat-gempa","status":"publish","type":"post","link":"https:\/\/www.its.ac.id\/news\/seminar-fmipa-ramalkan-tempat-gempa\/","title":{"rendered":"Seminar FMIPA Ramalkan Tempat Gempa"},"content":{"rendered":"

Yunus menyampaikan terobosan terbarunya di bidang image prosessing<\/em>, atau pengolahan gambar Di depan enam puluh mahasiswa dari lima jurusan FMIPA. Program racikan dosen Jurusan Matematika ini ia beri nama Frame Wavelet<\/em>.<\/p>\n

\u00e2\u20ac\u0153Belakangan sistem komunikasi yang digunakan berbasis suara, sudah saatnya beralih pada teknologi berbasis citra visual,\u00e2\u20ac\u009d tutur Yunus. Program yang ia olah memiliki berbagai macam keunggulan seperti menghilangkan buram dalam suatu gambar, memperbaiki gambar yang tidak teratur, dan merekonstruksi gambar.  <\/p>\n

Ali memberi contoh satu kejadian pencurian di sebuah bank. Untuk menemukan siapa pelakunya, pihak bank akan menggunakan kamera CCTV untuk melacak karakteristik pelaku. Kebanyakan dengan cara zoom <\/em> sampai beberapa kali hingga gambar menjadi pecah dan terlihat seperti titik besar yang berwarna hitam.<\/p>\n

\u00e2\u20ac\u0153Itu karena program yang digunakan belum mampu untuk mengolah data dengan resolusi tinggi. Dengan metode Frame Wavelet <\/em>yang menggunakan basis fungsi linear, gambar bisa direkonstruksi dengan lebih jelas,\u00e2\u20ac\u009d papar Ali.<\/p>\n

Ali mengakui bahwa progam yang ia buat ini tergolong sulit. Akan tetapi ia menuturkan bahwa programnya memiliki beberapa keunggulan. Diantaranya dilihat dari sistem numerik algoritmanya yang murah dan sederhana, juga efisiensi fungsi kerja lebih bagus dibanding dengan sistem pengolahan gambar yang sudah ada.<\/p>\n

Materi yang kedua disampaikan oleh Prof Dr Bagus Jaya Santosa. Beliau adalah seorang fisikawan yang bergerak di bidang geologi. Pada kesempatan kali ini, dosen Fisika lulusan UGM ini memaparkan tentang risetnya mengenai analisis pengolahan data gempa.<\/p>\n

\u00e2\u20ac\u0153Selama ini di Indonesia yang dalam hal ini diwakili Badan Meteorologi dan Geofisika (BMG) dalam menganalisa data gempa dalam bentuk gelombang ditinjau dari satu komponen ruang saja,\u00e2\u20ac\u009d ulas Bagus. Sehingga olahan data dalam bentuk gelombang hanya bisa menunjukkan  dimana posisi gempa terjadi menurut garis bujur dan garis lintang, kedalaman gempa, dan berapa kekuatan gempa tersebut.<\/p>\n

\u00e2\u20ac\u0153Yang belum disadari adalah model bumi yang anisotrop. Yaitu bagian bumi yang vertikal kecepatannya lebih lambat dari pada yang horizontal,\u00e2\u20ac\u009d ungkap Bagus. BMG, lanjut Bagus, menganggap bahwa kecepatan bumi secara vertikal lebih lambat hanya pada kulit terluar saja, bukan sampai ke inti bumi. Oleh sebab itu BMG hanya mengolah data gempa melalui satu komponen ruang, yaitu secara vertikal.<\/p>\n

Profesor ini kemudian mengajukan risetnya yang mampu menganalisa bentuk gelombang dalam tiga sumbu komponen ruang. Yakni secara veertikal, transversal, dan radial. Dengan begitu hasil olahan data jauh lebih optimal. Program Bagus bisa mengetahui seberapa luas bidang patahan yang diakibatkan gempa, dan  seberapa kuat bumi tergoncang akibat gempa.<\/p>\n

Salah satu keistimewaan program ini adalah bisa meramal tempat terjadinya gempa selanjutnya. \u00e2\u20ac\u0153Gempa terjadi karena patahan lempeng bumi, dengan mempelajari karakteristik patahan tersebut, maka bisa di ramalkan dimana gempa berikutnya terjadi,\u00e2\u20ac\u009d ungkap Bagus.(fz\/nrf)  
 <\/p>\n","protected":false},"excerpt":{"rendered":"

Seminar rutin bulanan Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) kembali dihelat Kamis (15\/4) siang. Dengan menghadirkan Prof Dr Bagus Jaya Santosa dan Prof Dr Ali Yunus, seminar ini dibagi menjadi dua sesi. Pertama membahas tentang image prosessing frame wavelet<\/em> dan yang kedua tentang pengolahan data pencatat gempa berbasis tiga komponen dimensi.<\/p>\n","protected":false},"author":1,"featured_media":9202,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-9201","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-berita-utama"],"yoast_head":"\nSeminar FMIPA Ramalkan Tempat Gempa - ITS News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.its.ac.id\/news\/seminar-fmipa-ramalkan-tempat-gempa\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Seminar FMIPA Ramalkan Tempat Gempa - ITS News\" \/>\n<meta property=\"og:description\" content=\"Seminar rutin bulanan Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) kembali dihelat Kamis (15\/4) siang. 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