Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks
Evaluation of seismometer health is crucial in accurately detecting earthquake and tsunami events. Currently, seismometer health evaluation is based solely on data quality unrelated to seismometer sensor performance. While seismometers are essential for tracking seismic activity, environmental facto...
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Universitas Negeri Jakarta
2024-12-01
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| Series: | Spektra: Jurnal Fisika dan Aplikasinya |
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| Online Access: | https://journal.unj.ac.id/unj/index.php/spektra/article/view/49829 |
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| author | Miftahul Jannah Risa Annisa Adhi Harmoko Saputro Titik Lestari |
| author_facet | Miftahul Jannah Risa Annisa Adhi Harmoko Saputro Titik Lestari |
| author_sort | Miftahul Jannah |
| collection | DOAJ |
| description | Evaluation of seismometer health is crucial in accurately detecting earthquake and tsunami events. Currently, seismometer health evaluation is based solely on data quality unrelated to seismometer sensor performance. While seismometers are essential for tracking seismic activity, environmental factors, aging components, and external interference can cause seismometers to function worse over time. This study presents a seismometer health diagnosis technique based on seismic signal analysis, including signal truncation, signal resampling, filtering, and deconvolution of instrument response. Then the proposed method of cross-spectral density coherence to extract seismometer sensor health indicators performed on two adjacent broadband seismic stations by analyzing the frequency domain with a maximum inter-station distance of 100 km. The data used are seismic signals recorded on three-component seismometers (North-South, East-West, Z-Vertical). The coherence value of cross-spectral density is used as an indicator to diagnose seismometer health. The proposed method was evaluated on a seismic network in Indonesia consisting of 88 stations and a teleseismic earthquake event in Honshu, Japan. The coherence values of almost all tested stations are above 0.8, which means good performance. The proposed method is suitable for analyzing the health of seismometers, especially in Indonesia. |
| format | Article |
| id | doaj-art-f296fbc0be2f4df0a75fde20b4b7397c |
| institution | OA Journals |
| issn | 2541-3384 2541-3392 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Universitas Negeri Jakarta |
| record_format | Article |
| series | Spektra: Jurnal Fisika dan Aplikasinya |
| spelling | doaj-art-f296fbc0be2f4df0a75fde20b4b7397c2025-08-20T02:21:58ZengUniversitas Negeri JakartaSpektra: Jurnal Fisika dan Aplikasinya2541-33842541-33922024-12-019317918810.21009/SPEKTRA.093.05250853Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic NetworksMiftahul Jannah0Risa Annisa1Adhi Harmoko Saputro2Titik Lestari3Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, IndonesiaDepartment of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, IndonesiaDepartment of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, IndonesiaMeteorological, Climatology and Geophysics Agency of Indonesia, Jakarta 10720, IndonesiaEvaluation of seismometer health is crucial in accurately detecting earthquake and tsunami events. Currently, seismometer health evaluation is based solely on data quality unrelated to seismometer sensor performance. While seismometers are essential for tracking seismic activity, environmental factors, aging components, and external interference can cause seismometers to function worse over time. This study presents a seismometer health diagnosis technique based on seismic signal analysis, including signal truncation, signal resampling, filtering, and deconvolution of instrument response. Then the proposed method of cross-spectral density coherence to extract seismometer sensor health indicators performed on two adjacent broadband seismic stations by analyzing the frequency domain with a maximum inter-station distance of 100 km. The data used are seismic signals recorded on three-component seismometers (North-South, East-West, Z-Vertical). The coherence value of cross-spectral density is used as an indicator to diagnose seismometer health. The proposed method was evaluated on a seismic network in Indonesia consisting of 88 stations and a teleseismic earthquake event in Honshu, Japan. The coherence values of almost all tested stations are above 0.8, which means good performance. The proposed method is suitable for analyzing the health of seismometers, especially in Indonesia.https://journal.unj.ac.id/unj/index.php/spektra/article/view/49829seismic instrumentation healthbroadband seismometerteleseismic earthquakecoherence cross-spectral density |
| spellingShingle | Miftahul Jannah Risa Annisa Adhi Harmoko Saputro Titik Lestari Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks Spektra: Jurnal Fisika dan Aplikasinya seismic instrumentation health broadband seismometer teleseismic earthquake coherence cross-spectral density |
| title | Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks |
| title_full | Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks |
| title_fullStr | Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks |
| title_full_unstemmed | Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks |
| title_short | Seismometer Health Diagnosis Based on Cross Spectral Density Coherence Method in Indonesia Seismic Networks |
| title_sort | seismometer health diagnosis based on cross spectral density coherence method in indonesia seismic networks |
| topic | seismic instrumentation health broadband seismometer teleseismic earthquake coherence cross-spectral density |
| url | https://journal.unj.ac.id/unj/index.php/spektra/article/view/49829 |
| work_keys_str_mv | AT miftahuljannah seismometerhealthdiagnosisbasedoncrossspectraldensitycoherencemethodinindonesiaseismicnetworks AT risaannisa seismometerhealthdiagnosisbasedoncrossspectraldensitycoherencemethodinindonesiaseismicnetworks AT adhiharmokosaputro seismometerhealthdiagnosisbasedoncrossspectraldensitycoherencemethodinindonesiaseismicnetworks AT titiklestari seismometerhealthdiagnosisbasedoncrossspectraldensitycoherencemethodinindonesiaseismicnetworks |