Presentation is loading. Please wait.

Presentation is loading. Please wait.

Indonesia: Western Java earthquake and tsunami Earthquake Information Parameters MagnitudeMw 7.7 RegionSOUTH OF JAWA, INDONESIA Date time2006-07-17 at.

Similar presentations


Presentation on theme: "Indonesia: Western Java earthquake and tsunami Earthquake Information Parameters MagnitudeMw 7.7 RegionSOUTH OF JAWA, INDONESIA Date time2006-07-17 at."— Presentation transcript:

1 Indonesia: Western Java earthquake and tsunami Earthquake Information Parameters MagnitudeMw 7.7 RegionSOUTH OF JAWA, INDONESIA Date time at 08:19:23.5 UTC Location9.24 S ; E Depth10 km Distances233 km SW Tasikmalaya (pop 271,143 ; local time 15:19) 226 km S Singaparna (pop 48,882 ; local time 15:19) credit EMSC Page created by W. G. Huang

2 Credit Hamzah Latief, Aditya Riadi and Dodi Zulkarnaen

3 Credit LDG; in french Page created by W. G. Huang

4 credit EMSC Quick Moment Tensors solutions Page created by W. G. Huang

5 credit EMSC More seismicity information

6 Population Density Along the South Coast of Java, Indonesia credit ReliefWeb Page created by W. G. Huang

7 South Coast of Java, Indonesia: Potential Tsunami-Affected Areas credit ReliefWeb Page created by W. G. Huang

8 Scores killed after earthquake sends tsunami on to Javanese beaches John Aglionby in Jakarta Tuesday July 18, 2006 An earthquake yesterday sent a tsunami several metres high crashing on to the beaches of southern Java, killing at least 105 people and leaving scores missing. Pangandaran resort bore the brunt of the waves. But witnesses said "very many" flimsy homes along the coast for at least 20 miles in each direction had been destroyed as two waves, about seven metres (23ft) and two metres high, surged ashore. The water was reportedly waist-deep more than half a mile inland. Much damage was inflicted by hundreds of wooden fishing boats becoming battering rams as they ploughed through shacks and fields. Power failed and fixed phone lines were cut. The Red Cross said at least 105 people were killed, most in Pangandaran, and 127 others were missing. "We are still evacuating areas and cross-checking data," Arifin Muhadi of the Red Cross told the Associated Press. Nearly 150 people were injured and 2,900 had been left homeless, the agency added. Rescue teams said the toll was likely to rise significantly because they were still searching through rubble, many roads were impassable, many houses had been washed away and in pitch darkness it was difficult to see corpses. Most Indonesian schools reopened yesterday after a four-week holiday. One Pangandaran resident said the toll would have been much higher if the earthquake had happened 24 hours earlier when the beach was full of holidaymakers. credit The Guardian

9 Jakarta officials failed to give tsunami warning · Monitors 'too busy checking on aftershocks' · Death toll rises to over 340 with at least 200 missing John Aglionby in Jakarta and agencies in Pangandaran Wednesday July 19, 2006 Officials in the Indonesian capital, Jakarta, failed to issue a tsunami warning despite receiving data about Monday's earthquake 20 minutes before the first wave struck the island of Java. One official told the Guardian they were too busy monitoring the aftershocks of the 7.7- magnitude quake that triggered the tsunami to raise the alarm. The government's science and technology minister, Kusmayanto Kadiman, confirmed last night that Indonesia had received bulletins from the Pacific Tsunami Warning Centre in Hawaii and Japan's meteorological agency after the quake, but "we did not announce them". Residents walk through a tsunami- devastated area in Pangandaran, West Java, Indonesia. Photograph: Dita Alangkara/AP Page created by W. G. Huang credit The Guardian

10 Java death toll passes 500 Staff and agencies Wednesday July 19, 2006 The death toll from the tsunami that hit Java earlier this week rose by almost 200 today to 531, with more than 270 people still missing. There were also reports today of a new earthquake, with a preliminary magnitude of 6.1, which caused buildings to sway in the Indonesian capital, Jakarta. There were no immediate reports of casualties following today's quake, which officials said was centred 118 miles south-west of Jakarta. Officials said the death toll from Monday's tsunami, which was caused by a 7.7-magnitude quake, was rising as police and army teams encountered more and more bodies as they worked in the disaster area on Java. Teams were working in the wreckage with sniffer dogs and mechanical equipment. The rising death toll was fuelling questions about the failures of officials in Jakarta to issue a tsunami warning. Officials received data about Monday's around 20 minutes before the first wave struck Java but failed to issue a tsunami warning. One official, science and technology minister Kusmayanto Kadiman, told the Guardian yesterday they were too busy monitoring the aftershocks to raise the alarm as the waves hit a 110-mile stretch of coastline. Speaking today, Mr Kadiman appeared to back away from his remarks yesterday. He told el-Shinta radio that the government's meteorological agency sent text messages to at least 400 officials, and that one of his staffers appeared on national television to warn of the tsunami. Page created by W. G. Huang credit The Guardian

11 credit ReliefWeb Page created by W. G. Huang

12 credit ReliefWeb Page created by W. G. Huang

13 Preliminary result of the 2006 West Java tsunami simulation By Hamzah Latief 1,2, Aditya Riadi 2 and Dodi Zulkarnaen 2 1) Dept. of Oceanography, Institute of Technology,Bandung, INDONESIA 2) Tsunami research Group, Center for Coastal andMarine Development, Institute of Technology, Bandung, INDONESIA The tsunami occurred at 15:19:30.73 (Locol time)(Simulation has been done at after around 2.5hours) Field Report from eye witness, tsunami heights at Pangandaran: -around 4 up to 6 m (Radio Elshinta) -around 7 m and inundation around 300 m in land (by Phone to Hamzah from The Jakarta Post) 06/07/17 08:19:30.73SO Page created by W. G. Huang

14 Middle East Technical University - Department of Civil Engineering Page created by W. G. Huang Credit Middle East Technical Unvi.

15 TSUNAMI RESEARCH TEAM (Department of Physics - University of Bologna ) On July 17, 2006, a M=7.7 earthquake occurred offshore southern Java. The origin time and location of the earthquake determined by the USGS are respectively 08:19:25 (UTC) and ( °E, 9.311°S) (last update on Wed Jul 19 7:00:02 UTC 2006). The earthquale generated a tsunami that had disastrous effects along several stretches of the south-central coastline of Java, causing the destruction of numerous inhabited centers and claiming the lives of more than 500 people (last estimate of Wed Jul 19, 2006, 9:00 UTC). The most affected places include the areas of Pangandaran, Pantai Pasir, Karang Duwur and Argo Peni. We present here some preliminary simulations of the tsunami, performed by means of a finite-difference code which solves the linear Navier-Stokes equations in the shallow- water approximation and in spherical coordinates. We adopt four different initial fault models, all sharing the same magnitude as weLl as the same focal mechanism, provided by the Harvard Moment Tensor Solution. The four models differ for the position and dimensions of the faults. In all cases, the initial condition for the tsunami is taken to coincide with the vertical coseismic displacement of the sea bottom induced by the earthquake. This is computed via the Okada (1992) analytical formulas. The bathymetry is taken from ETOPO2. NOTE: in all cases, "Position" and "Depth" refer to the mid point of the upper border of the fault. Page created by W. G. Huang credit Univ. of Bologna

16 CASE 1 Seismic parameters Length = 127 km Width = 28 km Strike = 289° Dip = 10° Rake = 95° Average slip on the fault = 3.3 m Position = ( ° E, ° S) Depth = 5 km. CASE 2 Seismic parameters Length = 127 km Width = 28 km Strike = 289° Dip = 10° Rake = 95° Average slip on the fault = 3.3 m Position = ( ° E, ° S) Depth = 5 km. Page created by W. G. Huang credit Univ. of Bologna

17 CASE 3 Seismic parameters Length = 100 km Width = 50 km Strike = 289° Dip = 10° Rake = 95° Average slip on the fault = 2.35 m Position = ( ° E, ° S) Depth = 5 km. CASE 4 Seismic parameters Length = 127 km Width = 28 km Strike = 289° Dip = 10° Rake = 95° Average slip on the fault = 2.35 m Position = ( ° E, ° S) Depth = 5 km. Page created by W. G. Huang credit Univ. of Bologna

18 Tsunami Event - July 17, 2006 South Java A preliminary simulation of today's (07/17/06) Jakarta event was performed with available seismic data. The earthquake origin is located at deg (lon), deg (lat). A 100x50 Km source is ruptured during the simulation with a slip amount of 2 meters. The fault 's Dip, Rake and Strike angles were 7, 67 and 270 deg respectively. The earthquake source was located 10 Km deep. The image shows tsunami radiation pattern with color coded information about the max wave height at different locations credit NOAA / NOAA Center for Tsunami Research Page created by W. G. Huang The following animation displays qualitative information about the tsunami propagation including tsunami wave interaction with ocean floor bathymetric features, and neighboring coastlines. The timer displays time elapsed since time of the earthquake, providing an estimate of tsunami arrival time at different locations. Wave propagation animation

19 Magnitude 7.7 SOUTH OF JAVA, INDONESIA - Monday, July 17, 2006 at 08:19:28 UTC Crefdit Il funzionario di turno M. Di Bona (17/07/06) INGV (Istituto Nazionale di Geofisica e Vulcanologia, Italy) Page created by W. G. Huang


Download ppt "Indonesia: Western Java earthquake and tsunami Earthquake Information Parameters MagnitudeMw 7.7 RegionSOUTH OF JAWA, INDONESIA Date time2006-07-17 at."

Similar presentations


Ads by Google