South Korea
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South Korea terletak di Asia dan memiliki klasifikasi risiko seismik Moderate. Total 14 gempa bumi telah tercatat di negara ini. Gempa bumi terbesar yang tercatat di negara ini mencapai magnitudo 5,5. Dengan populasi 51.159.889 dan luas daratan 100.210 km², peristiwa seismik dapat memiliki implikasi signifikan terhadap infrastruktur dan keselamatan publik.
Tinjauan Seismik
South Korea sits on the eastern margin of the Eurasian Plate, underlain by the stable Sino-Korean craton. The primary seismic stresses acting on the Korean Peninsula are transmitted from the Pacific Plate subduction occurring along the Japan Trench to the east, creating a northwest-directed compressional regime within the Korean crust. This manifests as reactivation of ancient northeast-southwest trending faults in the Precambrian and Palaeozoic basement, producing intraplate earthquakes of generally moderate magnitude. The Yangsan Fault and Ulsan Fault systems in southeastern Korea, near the city of Gyeongju, are the most clearly active fault zones identified in South Korea, with evidence of Quaternary offset and historical seismicity. The East Sea (Sea of Japan) to the east provides some seismicity from back-arc extension and offshore fault systems.
South Korea's modern seismic history has been marked by a general expectation of low hazard, disrupted by several recent events. The 2016 Gyeongju earthquake (magnitude 5.8) was the strongest recorded in South Korea since modern seismology began, causing damage to traditional structures and generating public debate about seismic design standards for nuclear power plants in the region. The 2017 Pohang earthquake (magnitude 5.5) killed one person and injured hundreds, and was subsequently linked to water injection at an enhanced geothermal power plant — making it one of the most significant cases of confirmed induced seismicity outside the oil and gas industry. Earlier, the 1978 Hongseong earthquake (magnitude 5.0) and the 1980 Uljin earthquake (magnitude 5.3) were the notable pre-digital era events.
The tectonic context of Korean seismicity reflects the position of the peninsula within the broad zone of intraplate deformation in eastern Asia. The Pacific slab descending beneath Japan generates compressional stresses that propagate westward into the Korean Peninsula, reactivating northeast-trending Cretaceous and Jurassic faults in the basement. The Yangsan Fault, running for 170 kilometres through southeastern Korea, has a complex history of both right-lateral and reverse motion and is considered the highest-priority seismic risk in South Korea given its proximity to the nuclear power clusters at Gyeongju and Ulsan. The [[seismic-wave]] propagation efficiency across the old, cold Precambrian crust is high, meaning that even moderate earthquakes can be felt across a large area of the peninsula.
Gempa Terbaru
| Mag. | Lokasi | Waktu | |
|---|---|---|---|
| Tidak ada gempa bumi terbaru. | |||
Peristiwa Historis yang Menonjol
Earthquakes Near Major Cities in South Korea
Pertanyaan yang Sering Diajukan
South Korea has a moderate level of seismic activity. Significant earthquakes occur periodically. A total of 14 earthquakes have been recorded in South Korea's seismic history.
The largest recorded earthquake in South Korea had a magnitude of 5.5. Earthquakes of this size can cause significant damage depending on depth, location, and local building standards.
South Korea has had 14 recorded earthquakes. This count includes events of all magnitudes detected by seismic monitoring networks. The actual number of earthquakes may be higher, as smaller events can go undetected.
South Korea is classified in the "Moderate" seismic zone, located in Asia. Seismic zones indicate the relative level of earthquake hazard based on historical activity, geological conditions, and proximity to tectonic plate boundaries.
Selama gempa bumi, Merunduk, Berlindung, dan Bertahan. Berlindung di bawah meja atau meja yang kokoh, lindungi kepala dan leher Anda, dan bertahan hingga guncangan berhenti. Jika di luar ruangan, pindah ke area terbuka jauh dari bangunan dan kabel listrik.
Risiko gempa bumi suatu negara dinilai menggunakan beberapa faktor: kedekatan dengan batas lempeng tektonik, seismisitas historis (frekuensi dan magnitudo kejadian masa lalu), kondisi geologi, kepadatan penduduk di zona seismik, dan penegakan standar bangunan. QuakeFYI menetapkan zona seismik dari 0 (tanpa risiko) hingga 4 (sangat tinggi) berdasarkan faktor-faktor tersebut.
Zona seismik adalah wilayah geografis yang diklasifikasikan berdasarkan tingkat bahaya gempa bumi. Zona 0 memiliki risiko yang dapat diabaikan, Zona 1 memiliki risiko rendah, Zona 2 memiliki risiko sedang, Zona 3 memiliki risiko tinggi, dan Zona 4 memiliki risiko sangat tinggi. Zona-zona ini ditentukan oleh data gempa bumi historis, kondisi tektonik, dan kondisi geologi.
Negara-negara di sepanjang Cincin Api Pasifik mengalami gempa bumi paling banyak. Jepang, Indonesia, Chili, Filipina, dan Iran secara konsisten mencatat aktivitas seismik tertinggi. Amerika Serikat (terutama Alaska dan California), Turki, dan Meksiko juga termasuk negara-negara dengan aktivitas seismik tertinggi.
Kepadatan penduduk memperbesar risiko gempa bumi karena lebih banyak orang dan infrastruktur yang terpapar potensi kerusakan. Gempa bumi magnitudo 7,0 di kota yang padat penduduknya dapat menyebabkan ribuan korban, sementara kejadian yang sama di area tak berpenghuni mungkin tidak menyebabkan korban. Standar bangunan dan kesiapsiagaan darurat sangat mengurangi risiko di area padat penduduk.
Kepadatan seismik mengukur konsentrasi aktivitas gempa bumi relatif terhadap luas daratan suatu negara, dinyatakan sebagai gempa bumi per 1.000 kilometer persegi. Kepadatan seismik yang tinggi menunjukkan aktivitas gempa bumi yang sering per satuan luas, membantu membandingkan risiko seismik antara negara-negara dengan ukuran berbeda.
Metrik Seismik
Aktivitas Seismik di Sekitar
Ringkasan Tahunan
Keselamatan Gempa Bumi
South Korea berada di zona risiko seismik sedang. Kesiapsiagaan dasar terhadap gempa bumi disarankan.
- Merunduk, Berlindung, dan Bertahan saat terjadi guncangan
- Simpan peralatan darurat dengan air, makanan, dan pertolongan pertama
- Identifikasi tempat aman di setiap ruangan jauh dari jendela dan benda berat
- Ketahui rute evakuasi tsunami jika berada di area pantai