bety prastiwi(10308066) dedi wiyanto(10308067) miftah hazmi (10308073) sarmag teknik sipil

8/14/2019 Bety Prastiwi(10308066) Dedi Wiyanto(10308067) Miftah Hazmi (10308073) Sarmag Teknik Sipil

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L/O/G/O

EARTHQUAKE

BETY PRASTIWI(10308066)

DEDI WIYANTO(10308067)

MIFTAH HAZMI (10308073)

SARMAG TEKNIK SIPIL 2008


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www.themegallery.com

Prevention for Earthquake

Earthquake in NTB

Earthquake in Yogyakarta

Earthquake

Earths Surface

Main Menu


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L/O/G/O Earths SurfaceAnatomy of Earth

Changes to Earths Surface


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Crust

Hydrosphere

Biosphere

Anatomy of Earth


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Hydrosphere

The hydrosphereconsist of thebodies of waterthat cover

of

Earths surface.

Type Percent

Ocean 97Glacier 3,2Groundwater 1,4

River andLake 0,001

Water Vapor 0,017


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Crust

The crust consists ofthe continents, otherland areas, and thebasins, or floors, of theoceans. The dry landof Earths surface is

called the continental

crust.


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Biosphere

The biosphereincludes all theareas of Earth

capable ofsupporting life


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Changes to Earths Surface


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Plate Tectonics

Theory that the outer shell ofthe earth is made up of thin,rigid plates that move relativeto each other.
http://d/Gempa%20Fix/Gempa%20Dedy.swf


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Plate Tectonics

When Plates Pull Apart When the plates pull apart, two

types of phenomena occurdepending on whether themovement takes place in the

oceans or on land.


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Plate Tectonics

When Plates Collide

When plates collideor push againsteach other, regionscalled convergentplate margins form.

1993-2008 Microsoft Corporation All rights reserved


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Plate Tectonics

When Plates SlidePast Each Other

some of Earths platesneither collide nor pullapart but instead slidepast each other. Theseregions are calledtransform margins. Fewvolcanoes occur inthese areas because

neither plate is forceddown into Earths

interior and little meltingoccurs.

Microsoft Encarta 2009. 1993 2008 Microsoft Corporation. All rights reserved.


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What are Earthquakes?

The shaking ortrembling caused bythe sudden releaseof energy

Usually associatedwith faulting orbreaking of rocks

Continuingadjustment ofposition results inaftershocks


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The Focus and Epicenter of an Earthquake

The point within

Earth where

faulting begins isthe focus, or

hypocenter

The point directly

above the focus on

the surface is the

epicenter


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Seismographs record

earthquake events

At convergent boundaries,focal depth increasesalong a dipping seismic

zone called a Benioffzone


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Where Do Earthquakes Occur and How Often?

~80% of all earthquakes occur in the circum-Pacific belt

most of these result from convergent margin activity

~15% occur in the Mediterranean-Asiatic belt

remaining 5% occur in the interiors of plates and onspreading ridge centers

more than 150,000 quakes strong enough to be felt are

recorded each year


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The Economics and Societal Impacts of EQs

Damage in Oakland, CA, 1989

Building collapse Fire

Tsunami

Ground failure


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What are Seismic Waves?

Response of material to the

arrival of energy frontsreleased by rupture

Two types:

Body waves

P and S

Surface waves

R and L


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Body Waves: P and S waves

Body waves

P or primary waves

fastest waves

travel through solids,liquids, or gases

compressional wave,

material movement isin the same directionas wave movement

S or secondary waves

slower than P waves

travel through solids

only shear waves - move

materialperpendicular towave movement


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Surface Waves: R and L waves

Surface Waves Travel just below or along the grounds surface

Slower than body waves; rolling and side-to-sidemovement

Especially damaging to buildings


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Can Earthquakes be Predicted?

Earthquake Precursors

changes in elevation or tilting of land surface,fluctuations in groundwater levels, magnetic field,electrical resistance of the ground

seismic dilatancy model

seismic gaps


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Can Earthquakes be Predicted?

Earthquake Prediction Programs

include laboratory and field studies of rocks before, during,and after earthquakes

monitor activity along major faults

produce risk assessments
http://earthquakes%20explained.swf/


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L/O/G/O

JOGJAS

EARTHQUAKE


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DATEANDTIME

JOGJASEARTHQUAKE

Cause ofQuake

Distances ofEarthquakes

Epicenter

SOURCEOF

QUAKE

ComparisonEarthquake

AFTERMATHFROM

QUAKE


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DATE AND TIME

Friday, May 26, 2006 at 22:54:01(UTC) from USGS

Friday, May 26, 2006 at 22:53:58(UTC) from EMSC

Saturday, May 27, 2006 at 5:54:01 AM

(local time/Jogjakarta)


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Cause of Quake

Type of earthquake:

Tectonic by the subduction of the Indo-Australia plate with eurasia plate.

Type of fault :Strike-Slip Fault

video
http://video.flv/http://video.flv/


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BMG Location : 8,26LS and 110,31LE Depth : 33 km (during earthquake ) The last update (3rd) from BMG determine if center of earthquake in 8,03LS and

110,32LE with depth : 11,3 Km Magnitude : 5,9 SR

Badan Geologi Departemen Energi dan Sumber Daya Mineral Republik

Indonesia Location : 8,007LS and 110,286LE Depth : 17,1 km

USGS Location : 7,977LS and 110,318LE Depth : 17,1 km

Magnitude : 6,3 SR

EMSC Location : 8,04LS and 110,39LE

Depth : 10 km

Magnitude : 6,4 SR

Source of Quake


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Distances of Earthquakes Epicenter

USGS 25 km (15 miles) SSW of Yogyakarta 115 km (75 miles) S of Semarang 145 km (90 miles) SSE of Pekalongan 440 km (275 miles) ESE of Jakarta

EMSC 29 Km S of Yogyakarta 11 Km SE Pundong

Vibration of quake until Solo, Semarang, Purworejo, Kebumenand Banyumas.

Vibration also until several cities in East Java, like : Ngawi,Madiun, Kediri, Trenggalek, Magetan, Pacitan, Blitar andSurabaya.

video
http://video%20gempa.mp4/http://video%20gempa.mp4/http://video%20gempa.mp4/http://video%20gempa.mp4/


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Position of Quakes Epicenter


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Aftermath from Quake

Victims of death : 5,782 Victims of injured : 36,299 135,000 houses damaged.

(Bantul : 3,580 death and more than 1,892injuries. Klaten : 1,668 death )

Schools : destroyed 148 and damaged 537 Destroyed electric installations and

communication Cracked of landing area in Adi Sutjiptos

airport


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HEAVILY DAMAGED AND

DESTROYED BUILDINGS

Mall Saphir Square

Mall Ambarukmo Plaza

GOR Universitas Ahmad Dahlan

STIE Kerja Sama

ISI (Institut Seni Indonesia) Yogyakarta


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HEAVILY DAMAGED AND DESTROYEDAncient Sites and Tourists Area

Prambanan temple

Sepulcher of Imogiri

Trajumas shed in Kraton Yogyakarta

Borobudur temple

Tourist area of Kasongan


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Pictures

Mall Shapire

Square

STIE KerjaSama


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Picture

ISI Yogyakarta


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Pictures

Prambanantemple

Sepulcher ofImogiri


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Pictures

Tourist AreaKASONGAN


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L/O/G/O

Comparison ofQuake in Padang,

Bengkulu,Tasikmalaya and

Jogja


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Comparison of Quake in Padang,Bengkulu, Tasikmalaya and Jogja

Time : Jogjas Earthquake : Saturday, May 27,

2006 at 5:53:58 AM

Padangs Earthquake : Tuesday, March 6,2007 at 10:49:39 AM

Tasikmalayas Earthquake : Wednesday,Sept 2, 2009 at 02:55:01 PM

Bengkulus Earthquake : Wednesday, Sept12, 2007 at 06:10:26 PM

C i f E th k i J j P d


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Comparison of Earthquake in Jogja, Padang,Bengkulu, and Tasikmalaya

Magnitude (USGS): Jogjas Earthquake : 6.3 SR

Padangs Earthquake : 7.6 SR

Tasikmalayas Earthquake : 7.0 SR

Bengkulus Earthquake : 7.9 SR

Depth (hypocenter) :

Jogjas Earthquake : 17,1 km

Padangs Earthquake : 80 km

Tasikmalayas Earthquake : 46,2 km

Bengkulus Earthquake : 24,9 km


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Comparison of Earthquake in Jogja, Padang,Bengkulu, and Tasikmalaya

Coordinat : Jogyas Earthquake : 7,977LS and

110,318LE

Padangs Earthquake :0,890LS and99,961LE

Tasikmalayas Earthquake :7,809 LS and107,259LE

Bengkulus Earthquake : 4,517LS,101,382LE

C i f E h k i J j


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Comparison of Earthquake in Jogja,Padang, Bengkulu, and Tasikmalaya

Location of epicenter : Jogyas Earthquake : 25 km (15 miles) SSW

of Yogyakarta

Padangs Earthquake : 57 Km SW ofPariaman, Padang

Tasikmalayas Earthquake :100 Km SSW ofBandung

Bengkulus Earthquake : 130 Km SW ofBengkulu


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Location Epicenter of Earthquake

Padang Bengkulu Jogjakarta Tasikmalaya

C i f E th k i J j


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Comparison of Earthquake in Jogja,Padang, Bengkulu, and Tasikmalaya

Cause of quake : Jogyas Earthquake :Tectonic by the subduction

of the Indo-Australia plate with eurasia plate.

Padangs Earthquake : Tectonic by the

subduction of the Indo-Australia plate (leftSumatera) with eurasia plate(right Sumatera).

Tasikmalayas Earthquake :Tectonic by thesubduction of the Indo-Australia plate with

eurasia plate.

Bengkulus Earthquake : Tectonic by thementawai fault


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Tectonic Summary

The November 8th,2009 earthquake inthe Sumbawa regionof Indonesia

occurred as a resultof thrust faulting onor near a microplateboundary within the

Sunda plate.


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History Seismicity NTB

FromTVOne


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http://d/Gempa%20Fix/Puppet.flv

bety prastiwi(10308066) dedi wiyanto(10308067) miftah hazmi (10308073) sarmag teknik sipil

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