Lebanon
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Lebanon terletak di Asia dan memiliki klasifikasi risiko seismik Moderate. Total 1 gempa bumi telah tercatat di negara ini. Gempa bumi terbesar yang tercatat di negara ini mencapai magnitudo 4,3. Dengan populasi 5.490.000 dan luas daratan 10.452 km², peristiwa seismik dapat memiliki implikasi signifikan terhadap infrastruktur dan keselamatan publik.
Tinjauan Seismik
Lebanon is cut from north to south by the Yammouneh Fault, the northernmost segment of the Dead Sea Transform Fault system. This left-lateral strike-slip [[fault]] constitutes the plate boundary between the Arabian Plate to the east and the Sinai (African) microplate to the west, accommodating approximately 3–6 millimetres per year of relative motion. The fault passes through the Bekaa Valley, which is a classic pull-apart trough formed at a releasing bend in the transform system. The Mount Lebanon Range to the west and the Anti-Lebanon Range to the east form the topographic walls of this tectonic valley. The Roum Fault in southern Lebanon is a major splay of the main transform that has produced damaging historical earthquakes. Offshore, the Latakia Ridge fault system beneath the eastern Mediterranean represents additional seismic sources.
Lebanon's seismic history is rich with catastrophic events recorded across multiple millennia. The 551 AD Beirut-Tripoli earthquake, estimated at magnitude 7.5, destroyed much of the Lebanese coast and generated a [[tsunami]] that struck Alexandria and other Mediterranean ports. The famous ancient Roman law school at Beirut (Berytus) was destroyed and never rebuilt to its former glory after this event. The 1202 Syria-Lebanon earthquake (magnitude approximately 7.6) caused widespread destruction across the Levant. The 1759 earthquakes — two major events in October and November — devastated Safed, Damascus, Baalbek, and the Bekaa Valley, killing tens of thousands. Modern Lebanon has not experienced a major damaging earthquake, but the geological evidence and [[epicenter]] distribution confirm that the seismic cycle is ongoing and a future great earthquake is inevitable on the Yammouneh or Roum fault systems.
The tectonic context of Lebanon's seismicity involves the northward motion of Arabia relative to Africa, driving left-lateral shear along the Dead Sea Transform. The pull-apart geometry of the Bekaa Valley is expressed in its flat basin floor underlain by thick sediments that could amplify [[seismic-wave]] energy in future earthquakes. The thrust faulting that has uplifted the Mount Lebanon and Anti-Lebanon ranges is a secondary consequence of restraining bends along the transform system. The offshore faulting beneath the Mediterranean creates additional hazard for Lebanon's densely populated coast. Beirut, a city of approximately 2.2 million people, sits on a narrow coastal strip between the sea and the steeply rising Mount Lebanon range, with the Yammouneh Fault approximately 30 kilometres to the east — dangerously close given the expected magnitude of the next major event.
Gempa Terbaru
| Mag. | Lokasi | Waktu | |
|---|---|---|---|
| Tidak ada gempa bumi terbaru. | |||
Peristiwa Historis yang Menonjol
Earthquakes Near Major Cities in Lebanon
Pertanyaan yang Sering Diajukan
Lebanon has a moderate level of seismic activity. Significant earthquakes occur periodically. A total of 1 earthquakes have been recorded in Lebanon's seismic history.
The largest recorded earthquake in Lebanon had a magnitude of 4.3. Earthquakes of this size can cause significant damage depending on depth, location, and local building standards.
Lebanon has had 1 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.
Lebanon 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
Lebanon 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