Seismic attenuation in fluid-filled fractured porous media – a
... Attenuation estimates based on the dynamic and quasi-static simulations as well as the theoretical scattering solution are presented in Fig. 1. At frequencies below 2000 Hz, the attenuation obtained from the oscillatory tests for FB WIFF and wave propagation simulations show a good agreement, which ...
... Attenuation estimates based on the dynamic and quasi-static simulations as well as the theoretical scattering solution are presented in Fig. 1. At frequencies below 2000 Hz, the attenuation obtained from the oscillatory tests for FB WIFF and wave propagation simulations show a good agreement, which ...
Earthquake scaling relations for mid
... [7] Oceanic and continental earthquakes provide complementary information about seismic processes. On the one hand, RTFs are more difficult to study than continental strike-slip earthquakes because they are farther removed from seismic networks; only events of larger magnitude can be located, and th ...
... [7] Oceanic and continental earthquakes provide complementary information about seismic processes. On the one hand, RTFs are more difficult to study than continental strike-slip earthquakes because they are farther removed from seismic networks; only events of larger magnitude can be located, and th ...
A Ten-Year Earthquake Occurrence Model for Italy
... passage time (BPT) model and applied to faults using the best available knowledge currently available is close to providing reliable large earthquake forecasts for the Italian region. The scientific importance of this model is linked to the use of similar EO models to forecast the largest earthquake ...
... passage time (BPT) model and applied to faults using the best available knowledge currently available is close to providing reliable large earthquake forecasts for the Italian region. The scientific importance of this model is linked to the use of similar EO models to forecast the largest earthquake ...
Deterministic seismic hazard assessment for Sultanate of Oman
... the surface faults, major structure elements, previously published focal mechanisms, and present land-sat image, they delineated 24 distinct seismic source zones (Fig. 3) in and around Oman. Most of the seismic zones in their model are related to the active tectonics of Zagros, Makran, the transitio ...
... the surface faults, major structure elements, previously published focal mechanisms, and present land-sat image, they delineated 24 distinct seismic source zones (Fig. 3) in and around Oman. Most of the seismic zones in their model are related to the active tectonics of Zagros, Makran, the transitio ...
Earthquake Statistics and Earthquake Research Studies in Pakistan
... Chaman fault zone characterizes the western boundary of this wide deformation zone. While its northern part traverses Afghanistan, the central part goes into Pakistan northwest of Quetta before it continues southwards towards the Arabian Sea [18]. We declare that the trend of seismicity in the regio ...
... Chaman fault zone characterizes the western boundary of this wide deformation zone. While its northern part traverses Afghanistan, the central part goes into Pakistan northwest of Quetta before it continues southwards towards the Arabian Sea [18]. We declare that the trend of seismicity in the regio ...
Long-term creep-rate changes and their causes
... creepmeters that extend along about 30 km of the fault. Two of them (CWC3 and CWN1) are nearly co-located, separated by only 30 meters within a winery building. Figure 1 also shows the locations of a number of earthquakes that occurred on the San Andreas fault between 1960 and 2003. The largest of t ...
... creepmeters that extend along about 30 km of the fault. Two of them (CWC3 and CWN1) are nearly co-located, separated by only 30 meters within a winery building. Figure 1 also shows the locations of a number of earthquakes that occurred on the San Andreas fault between 1960 and 2003. The largest of t ...
Plate Tectonics and Earthquake Potential of Spreading Ridges and
... marine earthquakes with particular plate boundary segments. We then combine these tools to estimate comer magnitudes (me), spectral slopes (/J), and coupled lithosphere thicknesses for all spreading ridges and oceanic transfonn faults. The distribution of spreading earthquakes is consistent with "no ...
... marine earthquakes with particular plate boundary segments. We then combine these tools to estimate comer magnitudes (me), spectral slopes (/J), and coupled lithosphere thicknesses for all spreading ridges and oceanic transfonn faults. The distribution of spreading earthquakes is consistent with "no ...
Seismic Waves NOTES.notebook
... Use the ESRT (page 11) and the "Slip and Slide" method: Slide the scrap paper with the 'tic' mark on it up and between the "P" and "S" curves (keeping it verticle) until the bottom of the paper is touching the "P" curve at the same time the "S" curve is touching the 'tic' mark. ...
... Use the ESRT (page 11) and the "Slip and Slide" method: Slide the scrap paper with the 'tic' mark on it up and between the "P" and "S" curves (keeping it verticle) until the bottom of the paper is touching the "P" curve at the same time the "S" curve is touching the 'tic' mark. ...
Presentation
... faults. Once the movement of the blocks between the faults are obstructed, thrust faults would be created to accommodate the deformation transfered by the strike slip faults. Longmenshan fault on which the Wenchuan earthquake occurred, is one of the thrust fault that accommodate the deformation tran ...
... faults. Once the movement of the blocks between the faults are obstructed, thrust faults would be created to accommodate the deformation transfered by the strike slip faults. Longmenshan fault on which the Wenchuan earthquake occurred, is one of the thrust fault that accommodate the deformation tran ...
Calibrating CAT bonds for Mexican earthquakes Wolfgang Karl
... Trench suffers large magnitude events with a frequency higher than any other subduction zone in the world. These events can cause substantial damage in Mexico City, due to a phenomenon known as the Mexico City effect. The Mexico City soil, which consists mostly of reclaimed, water-saturated lakebed ...
... Trench suffers large magnitude events with a frequency higher than any other subduction zone in the world. These events can cause substantial damage in Mexico City, due to a phenomenon known as the Mexico City effect. The Mexico City soil, which consists mostly of reclaimed, water-saturated lakebed ...
CHAPTER 2 – Seismic waves
... (where r is the distance from the source) • amplitude of a seismic wave is related to energy: E(r) α A2 • since E(r) α 1/r2 à ...
... (where r is the distance from the source) • amplitude of a seismic wave is related to energy: E(r) α A2 • since E(r) α 1/r2 à ...
case study on an existing rc building
... Abstract. Determination of seismic performance of existing buildings has become one of the key concepts in structural analysis topics after recent earthquakes (i.e. Izmit and Duzce Earthquakes in 1999, Kobe Earthquake in 1995 and Northridge Earthquake in 1994). Considering the need for precise asses ...
... Abstract. Determination of seismic performance of existing buildings has become one of the key concepts in structural analysis topics after recent earthquakes (i.e. Izmit and Duzce Earthquakes in 1999, Kobe Earthquake in 1995 and Northridge Earthquake in 1994). Considering the need for precise asses ...
How might infinitesimal strain analysis be used as a component of
... this plate motion and strain. Read (skim) Cascadia Subduction Zone Earthquakes: A Magnitude 9.0 Earthquake Scenario, pg. 6, 8-17 and answer the following questions: What is the expected economic loss from the earthquake? ...
... this plate motion and strain. Read (skim) Cascadia Subduction Zone Earthquakes: A Magnitude 9.0 Earthquake Scenario, pg. 6, 8-17 and answer the following questions: What is the expected economic loss from the earthquake? ...
Sociological Theories and Disaster Studies
... disasters in general. However, the amount of work required to do this would be prohibitive. Therefore, I cannot claim generalizability beyond the earthquake threat. I can only suggest the tools for doing so. I examine the content of claims (i.e., what is the message?), how claims are advanced or pro ...
... disasters in general. However, the amount of work required to do this would be prohibitive. Therefore, I cannot claim generalizability beyond the earthquake threat. I can only suggest the tools for doing so. I examine the content of claims (i.e., what is the message?), how claims are advanced or pro ...
OUTER RISE SEISMICITY OF THE SUBDUCTING NAZCA PLATE
... Subduction of the Nazca plate beneath the South American plate drives frequent and sometimes large magnitude earthquakes. During the past 40 years, significant numbers of outer rise earthquakes have occurred in the offshore regions of Colombia and Chile. In this study, we investigate the distributio ...
... Subduction of the Nazca plate beneath the South American plate drives frequent and sometimes large magnitude earthquakes. During the past 40 years, significant numbers of outer rise earthquakes have occurred in the offshore regions of Colombia and Chile. In this study, we investigate the distributio ...
Evaluating earthquake predictions and earthquake
... that, after the end time of the prediction, one must be able to determine objectively whether or not the prediction was successful. Making this determination should not require any interpretation. To state the preceding in more general terms, the prediction statement must be unambiguously falsifiabl ...
... that, after the end time of the prediction, one must be able to determine objectively whether or not the prediction was successful. Making this determination should not require any interpretation. To state the preceding in more general terms, the prediction statement must be unambiguously falsifiabl ...
Earthquake casualty estimation
Recent advances are improving the speed and accuracy of loss estimates immediately after earthquakes (within less than an hour) so that injured people may be rescued more efficiently. After major and large earthquakes, rescue agencies and civil defense managers rapidly need quantitative estimates of the extent of the potential disaster, at a time when information from the affected area may not yet have reached the outside world. For the injured below the rubble every minute counts.To rapidly provide estimates of the extent of an earthquake disaster is much less of a problem in industrialized than in developing countries. This article focuses on how one can estimate earthquake losses in developing countries in real time.