Potensi Gempa 8,9 SR Jangan Ditutup-Tutupi

Staf Khusus Presiden bidang Bantuan Sosial dan Bencana Andi Arief mengatakan potensi gempa berkekuatan besar semisal 8,9 skala richter (SR) harus disampaikan kepada masyarakat.

"Kita seharusnya sadar daerah ini merupakan salah satu 'supermarket' bencana dan itu tidak bisa ditutup-tutupi. Masyarakat harus mengetahui itu agar mereka dapat meningkatkan kesiapsiagaan dalam menghadapi setiap kemungkinan, bukan untuk menakut-nakuti," katanya dalam Workshop Peran Jurnalis dalam Penanggulangan Bencana di Padang, Sabtu (14/1).

Dia menambahkan, potensi gempa dengan kekuatan 8,9 SR tersebut berdasarkan kajian dari data kebencanaan di masa lalu. Seperti gempa bumi dan tsunami yang melanda Aceh pada 2004, merupakan siklus 600 tahunan yang sebelumnya terjadi sekitar abad ke-14 dan 15.

NASA Pelajari Gravitasi Bulan

Biasanya, di ruang pengendali misi di Laboratorium NASA Jet Propulsion terdapat larangan meminum sampanye. Namun, tahun baru kemarin larangan tersebut sejenak dilupakan setelah sepasang pesawat ruang angkasa NASA tiba di bulan untuk menjalankan misi pertamanya, mempelajari gravitasi bulan.

Perjalanan Grail-A dan Grail-B ke bulan tersebut menghabiskan waktu tiga setengah bulan dengan jarak tempuh 2,5 juta mil. Kecepatan keduanya jauh lebih lama dari penerbangan ke bulan oleh para astronot Apollo yang hanya menghabiskan waktu tiga hari.

Sejak roket Grail, yang seukuran mesin cuci, diperas menjadi sebuah roket kecil demi penghematan biaya, perjalanan ke bulan menjadi 30 kali lebih lama dibandingkan lama waktu yang ditempuh para astronot Apollo. "Kita bisa merayakan tahun baru sekarang," kata Manajer Proyek, David Lehman, usai menghadiri pesta pasca misi, dimana kue-kue dan minuman-minuman keras disajikan.

Matsumoto to Stress Japanese Food Safety at ASEAN

Foreign Minister Takeaki Matsumoto will stress that Japanese food is safe at a ministerial meeting of the Association of Southeast Asian Nations in Indonesia on Saturday.

Indonesia proposed the emergency meeting in Jakarta. In 2004, the country was devastated by the Sumatra tsunami.

The meeting will discuss aid to Japan from Southeast Asia and ASEAN-Japan cooperation on the management of disasters in the region.

Matsumoto will thank his ASEAN counterparts for aid and will stress the Japanese government's determination to restore the country.

On the nuclear accident at the Fukushima Daiichi power plant, Matsumoto is expected to mention Japan's all-out efforts to stop the spread of radioactive materials.

He is to say Japan will continue to be transparent in providing information to the international community.

The foreign minister will also reassure ASEAN member nations that Japan is inspecting food to ensure it's safe before exporting it.

Saturday, April 09, 2011 01:45 +0900 (JST)
source: http://www3.nhk.or.jp/daily/english/09_03.html

Cilacap Quake Claims at Least One Life: President’s Staff

The 7.1 magnitude earthquake that hit several areas in Java Monday morning caused at least one death.

Tris Yuni Istiadi, 49, died of heart attack during the journey back from the evacuation location.

According a statement by Andi Arief from the President’s special staff on natural disasters, the earthquake that occurred at 03.06 a.m some 293 kilometers southwest of Cilacap, West Java, had been felt in several areas.

In Cilacap, Central Java, Ciamis, Tasikmalaya and Garut, West Java, the quake was felt for around ten seconds.

Some residents in Cilacap and Tasikmalaya panicked and escaped to higher ground in fear of a tsunami.

In Cianjur and Sukabumi, West Java, the earthquake was felt for around five to 10 seconds. It was also reportedly felt in Jakarta.

“The Regional Disaster Management Body (BPBD) has conducted a check on the earthquake reference map in Cilacap regency after receiving information from the Meteorology, Climatology and Geophysics Agency reaching the conclusion that the epicenter of the quake outside the sector [was safe] for the Cilacap regency beach area,” the statement said. 

Two more earthquakes of weaker magnitudes occurred Monday at 1.38 p.m and 2.41 p.m., Antara.com reported.

sumber: http://www.thejakartapost.com

Strong Quake Hits off Southern Indonesia

A strong earthquake hit off Indonesia's main island of Java Monday, prompting authorities to briefly issue a tsunami warning and sending thousands of residents fleeing their homes in panic.

There were no immediate reports of injuries or damage from the 6.7-magnitude quake, which struck shortly after 3 a.m. Monday (2000 GMT, 4 p.m. EDT).

The U.S. Geological Survey said the temblor was centered 318 kilometers (nearly 200 miles) off southern Java, just 24 kilometers (15 miles) beneath the ocean floor.

Thousands of people in the town of Cilacap poured into the streets and ran to high ground, many gathering in mosques, witnesses told El Shinta radio.

Ninety minutes later, when the threat of a tsunami had passed, they were told to go home.

sumber: http://www.thejakartapost.com

Update on the March 11 Earthquake and Tsunami

The Japanese archipelago is located in an area where several continental and oceanic plates meet. This is the cause of frequent earthquakes and the presence of many volcanoes and hot springs across Japan. If earthquakes occur below or close to the ocean, they may trigger tidal waves (tsunami).

Historic earthquakes

Many parts of the country have experienced devastating earthquakes and tidal waves in the past. The Great Kanto Earthquake, the worst in Japanese history, hit the Kanto plain around Tokyo in 1923 and resulted in the deaths of over 100,000 people.

In January 1995 a strong earthquake hit the city of Kobe and surroundings. Known as the Southern Hyogo Earthquake or Great Hanshin Earthquake, it killed 6,000 and injured 415,000 people. 100,000 homes were completely destroyed and 185,000 were severely damaged.

Earthquake measurement

The Japanese "shindo" scale for measuring earthquakes is more commonly used in Japan than the Richter scale to describe earthquakes. Shindo refers to the intensity of an earthquake at a given location, i.e. what people actually feel at a given location, while the Richter scale measures the magnitude of an earthquake, i.e. the energy an earthquake releases at the epicenter.

The shindo scale ranges from shindo one, a slight earthquake felt only by people who are not moving, to shindo seven, a severe earthquake. Shindo two to four are still minor earthquakes that do not cause damage, while objects start to fall at shindo five, and heavier damage occurs at shindo six and seven.

Preparedness

Every household should keep a survival kit with a flashlight, a radio, a first aid kit and enough food and water to last for a few days. Avoid placing heavy objects in places where they could easily fall during an earthquake and cause injury or block exits. Have a fire extinguisher. Familiarize yourself with the designated evacuation area in your neighborhood.

During and after an earthquake

Falling objects, toppling furniture and panic present the greatest dangers during an earthquake. Try to protect yourself under a table or doorway. Do not run outside, and try to remain as calm as possible. If you are in the streets, try to find protection from glass and other objects that may fall from surrounding buildings.

After a strong earthquake, turn off ovens, stoves and the main gas valve. Then listen to the radio or television for news. In coastal areas beware of possible tidal waves (tsunami) while in mountainous areas beware of possible land slides.

source: http://www.japan-guide.com/e/e2116.html

2011 Tōhoku earthquake and tsunami

2011 Tōhoku earthquake and tsunami

From Wikipedia, the free encyclopedia

  (Redirected from Great East Japan earthquake)

2011 Tōhoku earthquake and tsunami An aerial view of tsunami damage in Tōhoku

An aerial view of tsunami damage in the Tōhoku region

2011 Tōhoku earthquake and tsunami is located in Japan

Tokyo

Sendai

Map showing the epicenter of the earthquake

Date 14:46:23, 11 March 2011 (+09:00)

Duration 6 minutes[1]

Magnitude 9.0 Mw[2][3]

Depth 32 km (19.9 mi)

Epicenter location 38.322°N 142.369°ECoordinates: 38.322°N 142.369°E

Type Megathrust earthquake

Countries or regions affected Japan (primary) Pacific Rim (tsunami, secondary)

Total damage Flooding, landslides, fires, building and infrastructure damage, nuclear incidents

Peak ground acceleration 2.99 g

Tsunami Yes 10-14 meters

Landslides Yes

Foreshocks 7+ (4+ above 6.0 MW)

Aftershocks 780+ (53+ above 6.0 MW)

Casualties 10,489 deaths,[4][5] 2,777 injured,[4][5] 16,621 people missing[4][5] (all figures preliminary)

v · d · e

The 2011 Tōhoku earthquake and tsunami (東北地方太平洋沖地震 Tōhoku Chihō Taiheiyō-oki Jishin[6]?, literally "Northeast region Pacific Ocean offshore earthquake"[fn 1]) was a 9.0-magnitude undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011.[2][3][7] The epicenter was approximately 72 kilometers (45 mi) east of the Oshika Peninsula of Tōhoku, with the hypocenter at an underwater depth of approximately 32 km (19.9 mi).[2][8]

The earthquake triggered extremely destructive tsunami waves of up to 23.6 m (77 ft)[9] that struck Japan minutes after the quake, in some cases traveling up to 10 km (6 mi) inland,[10] with smaller waves reaching many other countries after several hours. Tsunami warnings were issued and evacuations ordered along Japan's Pacific coast and at least 20 other countries, including the entire Pacific coast of North America and South America.[11][12][13]

The Japanese National Police Agency has officially confirmed 10,489 deaths,[4][5] 2,777 injured,[4][5] and 16,621 people missing[4][5] across eighteen prefectures, as well as over 125,000 buildings damaged or destroyed.[4][5] The earthquake and tsunami caused extensive and severe structural damage in Japan, including heavy damage to roads and railways as well as fires in many areas, and a dam collapse.[10][14] Around 4.4 million households in northeastern Japan were left without electricity and 1.5 million without water.[15] Many electrical generators were taken down, and at least three nuclear reactors suffered explosions due to hydrogen gas that had built up within their outer containment buildings. On 18 March, Yukiya Amano—the head of the International Atomic Energy Agency—described the crisis as "extremely serious."[16] Residents within a 20 km (12 mi) radius of the Fukushima I Nuclear Power Plant and a 10 km (6 mi) radius of the Fukushima II Nuclear Power Plant were evacuated.

Estimates of the Tōhoku earthquake's magnitude make it the most powerful known earthquake to have hit Japan, and one of the five most powerful earthquakes in the world overall since modern record-keeping began in 1900.[7][17][18] Japanese Prime Minister Naoto Kan said, "In the 65 years after the end of World War II, this is the toughest and the most difficult crisis for Japan."[19] The earthquake moved Honshu 2.4 m (7.9 ft) east and shifted the Earth on its axis by almost 10 cm (3.9 in).[20][21] Early estimates placed insured losses from the earthquake alone at US$14.5 to $34.6 billion.[22] The Bank of Japan offered ¥15 trillion (US$183 billion) to the banking system on 14 March in an effort to normalize market conditions.[23] On 21 March, the World Bank estimated damage between US$122 billion and $235 billion.[24] Japan's government said the cost of the earthquake and tsunami that devastated the northeast could reach $309 billion, making it the world's most expensive natural disaster on record.[25]

Source: http://en.wikipedia.org/wiki/Great_East_Japan_earthquake

FOTO DAN VIDEO GEMPA-TSUNAMI JEPANG 2011

Pada pukul 14.46 kedalaman sekitar 10 kilometer, Jepang mengalami gempa dengan kekuatan 8,9 skala richter (direvisi menjadi 9 SR), diikuti tsunami setinggi 10 meter, pusat gempa 373 km dari Tokyo timur laut jepang/japan.Tsunami sekitar 10 cm juga melanda Indonesia bagian Timur.