Ground Penetrating Radar (GPR) - Concept 3 Physical Properties PDF

Eksplorasi Elektromagnetik (CF234420) Ground Penetrating Radar (GPR)-Concept-3 Physical P...

Eksplorasi Elektromagnetik (CF234420) Ground Penetrating Radar (GPR)-Concept-3 Physical Properties Pekan 12-Rabu, 13 Oktober 2024 Exploring The Earth, Empowering Society https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS Teknik_Geofisika_ITS Departemen Teknik Geofisika ITS  AGENDA/SESSION CPL-CPMK-Sub CPMK GPR Concept-Physical Properties Diskusi www.its.ac.id Departemen Teknik Geofisika ITS https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS Teknik_Geofisika_ITS  CPL-CPMK-Sub CPMK www.its.ac.id https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS INSTITUT TEKNOLOGI SEPULUH NOPEMBER, Teknik_Geofisika_ITS Surabaya Departemen Teknik - Indonesia Geofisika ITS  Capaian Pembelajaran Mata Kuliah (CPMK) Mampu menguasai konsep dan prinsip matematika dan sains alam untuk Metode Elektromagnetik (GPR, VLF, dan MT) Mampu mengimplementasikan Metode Elektromagnetik secara prosedural mulai dari pencarian data, pemrosesan, geologi bawah permukaan dan pemodelan untuk menyelesaikan masalah keteknikan yang mendalam. Kemampuan Akhir Tiap Tahapan Belajar (Sub-CPMK) [C2,A3] Mampu menjelaskan konsep dan prinsip dasar Sub Gelombang Elektromagnetik dan hubungannya dengan CPMK-1 karakter sifat fisika batuan [C3,P3,A4] Mampu menjelaskan konsep, melakukan Sub pengolahan dan interpretasi terhadap data EM frekuensi CPMK-2 rendah :Very Low Frequency [C3,P3,A4] Mampu menjelaskan konsep, melakukan Sub pengolahan dan interpretasi terhadap data EM frekuensi CPMK-3 rendah :Magnetotelurik [C3,P3,A4] Mampu menjelaskan konsep, melakukan Sub pengolahan dan interpretasi terhadap data EM frekuensi tinggi CPMK-4 :Ground Penetrating Radar https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS Teknik_Geofisika_ITS Departemen Teknik Geofisika ITS  GPR CONCEPT PHYSICAL PROPERTIES www.its.ac.id https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS INSTITUT TEKNOLOGI SEPULUH NOPEMBER, Teknik_Geofisika_ITS Surabaya Departemen Teknik - Indonesia Geofisika ITS  Method – basic concepts the source transmitter (Tx) sends a pulse of radiowaves into the ground Sensors (Rx) measure the amplitudes and travel times of radiowave signals that have been distorted by the Earth Basic diagram for a GPR survey https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS Teknik_Geofisika_ITS Departemen Teknik Geofisika ITS  Important properties of radiowaves Propagation Velocity In general, the velocity of radiowaves through a homogeneous material is given by: Radiowaves propagate through different materials at different speeds. The propagation velocity of the Earth directly effects the arrival times of GPR signals. The velocity of the radiowaves depends on the physical properties of the medium This equation can be used to show that the radiowave velocity is largest in free- space (i.e. when = 0,  = ₒ and ε = εo). Therefore, electromagnetic waves in matter travel slower than the speed of light (c = 3.00 x 108 m/s). https://www.its.ac.id/tgeofisika/ Teknik Geofisika ITS Teknik_Geofisika_ITS Departemen Teknik Geofisika ITS  Method – basic concepts Propagation Velocity GPR signals are characterized as being high-frequency. Thus in many cases, it is safe to assume that σ