Kikuchi method is applied for teleseismic body-waveform modeling.

Slides:

Advertisements

Similar presentations

Fast determination of earthquake source parameters from strong motion records: Mw, focal mechanism, slip distribution B. Delouis, J. Charlety, and M. Vallée.

Advertisements

Measuring Earthquakes

 Depth Into the earth Surface of the earth Distance along the fault plane 100 km (60 miles) Slip on an earthquake fault START.

用近震波形分析2013 年6 月2 日南投地震的震源過程謝銘哲1, 趙里2, 馬國鳳1 1國立中央大學地球物理研究所

Lecture #13- Focal Mechanisms

Geol 600 Notable Historical Earthquakes Source mechanisms and body wave radiation patterns

Recall the momentum equation:  ∂ 2 u i /∂t 2 = ∂ j  ij +f i, where f i is the body force term An earthquake source is usually considered slip on a surface.

5: EARTHQUAKES WAVEFORM MODELING S&W SOMETIMES FIRST MOTIONS DON’T CONSTRAIN FOCAL MECHANISM Especially likely when - Few nearby stations, as.

Application to Wells Nevada Earthquake

U.S. Department of the Interior U.S. Geological Survey Earthquake Sources Based on a lecture by James Mori of the Earthquake Hazards Division, Disaster.

L Braile, 1/26/2006 (revised, Sept., 2009) What is Moment Magnitude?

Changes that IMPACT peoples lives! Changes to the Earth and Peoples lives in a matter of seconds.

Brainstorm: How to assess an Earthquake: Stroked off B.C. coast? Rapid Earthquake Risk Assessment Source Parameters USGS World Shake Maps USGS Shake Aftershocks.

Chapter 11: Earthquakes. Introduction Earthquake: Vibration of the Earth produced by rapid release of energy Most often caused by slippage along a fault.

Inside Earth Chapter 2 Earthquakes 2.2 Earthquakes and Seismic Waves.

1 Cythera M6.7 earthquake (January 8, 2006) in southern Aegean: uneasy retrieval of the upward rupture propagation J. Zahradnik, J. Jansky, V. Plicka,

Earthquake Ground shaking caused by the sudden and rapid movement of one block of rock slipping past another along fractures in Earth’s crust called FAULTS.

Zadonina E.O. (1), Caldeira B. (1,2), Bezzeghoud M. (1,2), Borges J.F. (1,2) (1) Centro de Geofísica de Évora (2) Departamento de Física, Universidade.

LECTURE 6: SEISMIC MOMENT TENSORS

The Rupture Process of the August 23, 2011 Virginia Earthquake Martin Chapman Virginia Tech.

The January 2010 Efpalio earthquake sequence in Western Corinth Gulf: epicenter relocations, focal mechanisms, slip models The January 2010 Efpalio earthquake.

A. Pınar, D. Kalafat, C. Zülfikar Kandilli Observatory and Earthquake Research Institute.

More Stuff About Earthquakes. Faults Any stress on the plates can cause an earthquake if the elastic limit is reached. Each type of stress results in.

8.1 Earthquakes.

Earthquakes Vibrations of the earths crust Occur when rocks shift suddenly under a fault When friction prevents rocks from moving the fault is said to.

Earthquakes An earthquake is the shaking or trembling of the earth caused by the _Sudden_ movement of the earth’s crust. They usually occur where rocks.

Earthquake Vocabulary

1 Cythera M6.7 earthquake (January 8, 2006) in southern Aegean: uneasy retrieval of the upward rupture propagation J. Zahradnik, J. Jansky, V. Plicka,

・ What is the Earthquake Source? Elastic Rebound Fault Slip  Double-couple Force ・ Seismic Moment Tensor ・ Models of Earthquake Faults ・ Earthquake Size.

The seismogram U = Source * Propagation * Site.

Chapter 8 Section 1 Earthquakes: Vibration of Earth created when there is a rapid release of energy Caused by slippage along a fault Faults are fractures.

Alexandra Moshou, Panayotis Papadimitriou and Kostas Makropoulos MOMENT TENSOR DETERMINATION USING A NEW WAVEFORM INVERSION TECHNIQUE Department of Geophysics.

Brittle failure occurs within “seismogenic zone” defined by fault properties Typically 15 km for vertical strike slip faults ~30-50 km for subduction zone.

Earthquakes. earthquakes Earthquakes are natural vibrations of the ground caused by movement along gigantic fractures in Earth’s crust or by volcanic.

8.1 What Is an Earthquake? 1) Focus is the point within Earth where the earthquake starts. 2) Epicenter is the location on the surface directly above the.

Ch 8 – Intro to Earthquakes Spring Earthquakes 8.1 What Is an Earthquake? Focus is the point within Earth where the earthquake starts. Epicenter.

MOMENT TENSOR INVERSION OF POSSIBLY MULTIPLE EVENTS AT REGIONAL DISTANCES Petra Adamová 1, Jiří Zahradník 1, George Stavrakakis 2 1 Charles University.

Megaquake: Hour that Shook Japan (42:58min)

What are Magnitude and Intensity?

Deep Earthquakes.

Kinematic Modeling of the Denali Earthquake

Ground Deformation: Faulting and Folding Earthquakes and Mountain- Building.

Normal Faults What Happens? Type of Boundary? Picture Examples…

1958 Lituya Bay, Alaska Earthquake Magnitude 7.9

What causes Earthquakes?

8.2 – Measuring Earthquakes – Part II

Earthquakes Chapter 11.

Earthquakes vocabulary review

Earthquakes Pressure Release.

ENERGY RELEASES ON/IN THE EARTH

Principal Stress rotates to EW direction

Warm Up 09/26/2016 What are the three types of boundaries and explain the motion that occurs at each? What is produced at a Transform Boundary? What.

Faults Fault Line.

There are more than 30,000 earthquakes worldwide each year!

Earthquakes EARTHQUAKE 101.

SICHUAN EARTHQUAKE May 12, 2008

CH. 14 Vocabulary test study guide

Los mecanismos focales de los terremotos

What is an Earthquake? Pgs

Earthquakes Vocab.

Seismic Waves Seismology

Chapter 2 Vocabulary Review

by Satoshi Ide, Annemarie Baltay, and Gregory C. Beroza

by Wenyuan Fan, and Peter M. Shearer

Earthquakes Forces Inside Earth

Presentation transcript:

Kikuchi method is applied for teleseismic body-waveform modeling

154 teleseismic body- waveforms (only P) is used. Magnitude 6.4 Strike/dip/rake: 168/53/130 The fault is dipping W-SW 2 main peaks in the source- time-function (STF), about 7 and 13 seconds after the rupture initiation. Total STF about 16 seconds. Kikuchi method is applied for teleseismic body-waveform modeling

Max slip about 90 cm. 2 different fault segments moved during the earthquake. That is why the GCMT solution shows substantial non-double-couple (NDC) component; better to say CLVD component. Segment 1 (between -6 and 10km along strike) was almost pure reverse. The slip contours of the first segment was deeper compared to that of segment 2. This is equivalent to the first peak (at 7 seconds) in the STF. Segment 2 (between 10km and 30km along strike) was behind the main energy release. It was a shallow reverse subevent with substantial strike-slip component.

Slip contours of 0.1 m The slip-distribution is very dependent on the epicenter location. It can be shifted based on the correct epicenter location.

Slip contours of 0.2 m.

Slip contours of 0.1 m with aftershocks recorded by IGTU.