Earthquake swarm and b-value characterization of the Yellowstone
... Schorlemmer et al., 2004; Schorlemmer and Wiemer, 2005; Schorlemmer et al., 2005). In tectonic areas, the b-value is generally around 1.0 (Frolich and Davis, 1993). In contrast, volcanic areas are characterized by b-values greater or less than 1.0 with values as high as 3.0 (McNutt, 2005). Over 30,0 ...
... Schorlemmer et al., 2004; Schorlemmer and Wiemer, 2005; Schorlemmer et al., 2005). In tectonic areas, the b-value is generally around 1.0 (Frolich and Davis, 1993). In contrast, volcanic areas are characterized by b-values greater or less than 1.0 with values as high as 3.0 (McNutt, 2005). Over 30,0 ...
Spatiotemporal relationships between earthquakes of the Mid
... The seismicity of the mid Atlantic Ridge (MAR) was compared in space and time with the seismicity along the Atlantic continental margins of Europe, Africa, North America, the Carribean and South America in a bid to appraise the level of influence of the ridge push force at the MAR on the Atlantic co ...
... The seismicity of the mid Atlantic Ridge (MAR) was compared in space and time with the seismicity along the Atlantic continental margins of Europe, Africa, North America, the Carribean and South America in a bid to appraise the level of influence of the ridge push force at the MAR on the Atlantic co ...
Possible stress states adjacent to the rupture
... region stress field (Fig. 1b). Therefore, we conclude that the maximum stress is close to horizontal and should be NW–SE directed. According to the discussion above, we knew the maximum stress before Chi-Chi earthquake is aligned with the horizontal direction. Here, we test whether the magnitude of v ...
... region stress field (Fig. 1b). Therefore, we conclude that the maximum stress is close to horizontal and should be NW–SE directed. According to the discussion above, we knew the maximum stress before Chi-Chi earthquake is aligned with the horizontal direction. Here, we test whether the magnitude of v ...
Deliverable 3.2 - version 2 - Website for the dissemination of long
... 1. SHEEC was first released on 13 April 2011, as deliverable D3.2 of the Project. The catalogue was made available as two separate files: a) the 1000-1899 portion (SHEEC_1000-1899_v1.xls), published on the Task 3.1 webpage http://www.emidius.eu/SHARE/task3_1/, under the Partner Area section; b) the ...
... 1. SHEEC was first released on 13 April 2011, as deliverable D3.2 of the Project. The catalogue was made available as two separate files: a) the 1000-1899 portion (SHEEC_1000-1899_v1.xls), published on the Task 3.1 webpage http://www.emidius.eu/SHARE/task3_1/, under the Partner Area section; b) the ...
Relocating a Cluster of Earthquakes Using a Single
... that it is possible to significantly reduce location uncertainty when few stations are available by using more of the waveform. Coda refers to later arriving waves in the seismogram that arise from scattering (Aki, 1969; Snieder, 1999, 2006). Coda waves are ignored in most seismological applications ...
... that it is possible to significantly reduce location uncertainty when few stations are available by using more of the waveform. Coda refers to later arriving waves in the seismogram that arise from scattering (Aki, 1969; Snieder, 1999, 2006). Coda waves are ignored in most seismological applications ...
Observations and Tectonic Setting of Historic
... (1976), Street and Turcotte (1977), Bollinger (1979), Street and Lacroix (1979), Kim (1998), and Seeber et al. (1998). The felt areas of those events are either from them, yearly issues of United States Earthquakes, or the Community Internet Intensity Working Group (2006). Because a linear relations ...
... (1976), Street and Turcotte (1977), Bollinger (1979), Street and Lacroix (1979), Kim (1998), and Seeber et al. (1998). The felt areas of those events are either from them, yearly issues of United States Earthquakes, or the Community Internet Intensity Working Group (2006). Because a linear relations ...
chapter 5 intervention strategies
... damage occurred, and develop alternative schemes to repair and/or strengthen the structure. These alternative schemes must be evaluated and the most appropriate solution should be selected. The engineer must first analyze the damaged structure and thoroughly understand the causes of damage occurrenc ...
... damage occurred, and develop alternative schemes to repair and/or strengthen the structure. These alternative schemes must be evaluated and the most appropriate solution should be selected. The engineer must first analyze the damaged structure and thoroughly understand the causes of damage occurrenc ...
Designing Buildings to Accommodate Earthquake Surface Fault
... designing strong, ductile foundation elements that can resist imposed earth pressures. INTRODUCTION Surface fault rupture has severely damaged numerous buildings and bridges during major earthquakes that produce significant ground deformations associated with differential movement along the ruptured ...
... designing strong, ductile foundation elements that can resist imposed earth pressures. INTRODUCTION Surface fault rupture has severely damaged numerous buildings and bridges during major earthquakes that produce significant ground deformations associated with differential movement along the ruptured ...
The Performance of Earthquake Strengthened URM Buildings in the
... building of a specific period will be subjected to. The spectra can be used to assess both the seismic inertial forces induced in an elastically responding structure and the amount of induced displacement relative to the ground A structural element used to assist with connecting various parts of the ...
... building of a specific period will be subjected to. The spectra can be used to assess both the seismic inertial forces induced in an elastically responding structure and the amount of induced displacement relative to the ground A structural element used to assist with connecting various parts of the ...
Observing spatio-temporal clustering and separation using
... The emergence of R ∗ by simply comparing the original and shuffled data is an indication that it represents a characteristic length scale in the system. The fact that its value differs per region suggests that it might be related to the underlying earthquake-generating mechanisms at work. As it repr ...
... The emergence of R ∗ by simply comparing the original and shuffled data is an indication that it represents a characteristic length scale in the system. The fact that its value differs per region suggests that it might be related to the underlying earthquake-generating mechanisms at work. As it repr ...
Magnitude Scaling Relationships - GEM Nexus
... to their applicability to a particular environment. The cover image illustrates this issue by showing the significant underestimation of the M7.1 4 September 2010 Darfield (New Zealand) earthquake by the above regressions (the lower curves on the image). The objectives of this report are twofold: (1 ...
... to their applicability to a particular environment. The cover image illustrates this issue by showing the significant underestimation of the M7.1 4 September 2010 Darfield (New Zealand) earthquake by the above regressions (the lower curves on the image). The objectives of this report are twofold: (1 ...
2002/005 OFFSHORE TECHNOLOGY REPORT Seismic hazard: UK continental shelf
... grabens ended as abortive rifts. Thermal relaxation caused major basinal parts of the North Sea area to steadily subside, with only minor faults involved. By the end of the Alpine Orogeny, all basinal areas subsided. Subsidence was not uniform, yet its main axis followed the N-S graben trends. The r ...
... grabens ended as abortive rifts. Thermal relaxation caused major basinal parts of the North Sea area to steadily subside, with only minor faults involved. By the end of the Alpine Orogeny, all basinal areas subsided. Subsidence was not uniform, yet its main axis followed the N-S graben trends. The r ...
Segmentation of seismicity along the Himalayan Arc due to
... 15 km, its high electrical conductivity was attributed to the mantle derived fluids (Arora, 2001). More recently, Wang and Bilek (2011) have shown that the ridges or seamounts marked by high degree of fractured network are characterised by the heterogeneous friction, leading to heterogeneous couplin ...
... 15 km, its high electrical conductivity was attributed to the mantle derived fluids (Arora, 2001). More recently, Wang and Bilek (2011) have shown that the ridges or seamounts marked by high degree of fractured network are characterised by the heterogeneous friction, leading to heterogeneous couplin ...
Intricacies of the Himalayan seismotectonics and seismogenesis
... block of the Himalaya 22. Rupture model of the great Himalayan earthquake of 1897 using high-quality data yielded impressive results and was ascertained the role of asperity in triggering the mega earthquake 23. Similar approach may be adopted for other past damaging earthquakes to understand the ru ...
... block of the Himalaya 22. Rupture model of the great Himalayan earthquake of 1897 using high-quality data yielded impressive results and was ascertained the role of asperity in triggering the mega earthquake 23. Similar approach may be adopted for other past damaging earthquakes to understand the ru ...
Earthquake scaling relations for mid
... outer scale of faulting, i.e., the relationship between fault dimension and the size of the largest earthquake [Jackson, 1996; Schwartz, 1996; Ward, 1997; Kagan and Jackson, 2000]; (4) the effects of cumulative offset on shear localization and the frequency-magnitude statistics of earthquakes, in pa ...
... outer scale of faulting, i.e., the relationship between fault dimension and the size of the largest earthquake [Jackson, 1996; Schwartz, 1996; Ward, 1997; Kagan and Jackson, 2000]; (4) the effects of cumulative offset on shear localization and the frequency-magnitude statistics of earthquakes, in pa ...
Tectonics - Teesdale School
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Tsunamis
... • How were the stories different? (Tilly Smith had learned about the warning signs and safety steps for a tsunami in a formal geography class. The Simuelue villagers had the story, and how to stay safe, passed down to them by survivors of the 1907 earthquake-induced tsunami.) • Why did so many other ...
... • How were the stories different? (Tilly Smith had learned about the warning signs and safety steps for a tsunami in a formal geography class. The Simuelue villagers had the story, and how to stay safe, passed down to them by survivors of the 1907 earthquake-induced tsunami.) • Why did so many other ...
OUTER RISE SEISMICITY OF THE SUBDUCTING NAZCA PLATE
... reactivated faults, and the infiltration of water in the upper lithosphere of the plate [Ranero et al., 2003; Moscoso and Contreras-Reyes, 2012]. The neutral plane between tensional seismicity in the upper layers of the plate and compressional seismicity in the lower portion of the plate is possibl ...
... reactivated faults, and the infiltration of water in the upper lithosphere of the plate [Ranero et al., 2003; Moscoso and Contreras-Reyes, 2012]. The neutral plane between tensional seismicity in the upper layers of the plate and compressional seismicity in the lower portion of the plate is possibl ...
Change of crustal gravitational potential energy in the Taiwan
... compressive mountain-building zone are not all thrusting in mechanism. However, the overall calculated crustal GPE change due to the Chi-Chi earthquake sequence rapidly gained and reached 1.821016 J after 1 month of the main shock (Fig. 4b). Afterward, the crustal GPE change was almost stable for t ...
... compressive mountain-building zone are not all thrusting in mechanism. However, the overall calculated crustal GPE change due to the Chi-Chi earthquake sequence rapidly gained and reached 1.821016 J after 1 month of the main shock (Fig. 4b). Afterward, the crustal GPE change was almost stable for t ...
PDF version - Bullard Laboratories
... the source-side velocity structure and its associated interfaces into account, and as such the effects of this on the delay times and relative amplitudes of the depth phases are not taken into account in our solutions. However, this effect is relatively minor when compared to other sources of uncert ...
... the source-side velocity structure and its associated interfaces into account, and as such the effects of this on the delay times and relative amplitudes of the depth phases are not taken into account in our solutions. However, this effect is relatively minor when compared to other sources of uncert ...
Where Are Earthquakes Happening Right Now? Worksheet
... a. Looking at the newly added red U.S. fault lines, what do you think a fault is? How do you think they are associated with earthquakes? ...
... a. Looking at the newly added red U.S. fault lines, what do you think a fault is? How do you think they are associated with earthquakes? ...
SLOPE FAILURES AND PALEOSEISMICITY, EFFINGHAM INLET,
... The sediments comprise laminated to non-laminated, olive-coloured, diatomaceous silts. Laminated intervals consist of alternating light-coloured laminae (composed of diatoms) and darker laminae (composed of lithic particles). Couplets average about 2.7 mm in thickness in the inner basin, while outer ...
... The sediments comprise laminated to non-laminated, olive-coloured, diatomaceous silts. Laminated intervals consist of alternating light-coloured laminae (composed of diatoms) and darker laminae (composed of lithic particles). Couplets average about 2.7 mm in thickness in the inner basin, while outer ...
Operational Earthquake Forecasting
... rendering uninhabitable approximately 20,000 buildings (Figure 1.1). The quake injured at least 1,500 residents and temporarily displaced more than 65,000. Many of the region's cultural sites were badly damaged or destroyed, including the historic centers of Onna, Paganica, and Castelnuovo. ...
... rendering uninhabitable approximately 20,000 buildings (Figure 1.1). The quake injured at least 1,500 residents and temporarily displaced more than 65,000. Many of the region's cultural sites were badly damaged or destroyed, including the historic centers of Onna, Paganica, and Castelnuovo. ...
The mechanism of intraplate earthquakes: insights from geodynamic
... consistent with the mechanisms and recurrence of large earthquakes [Stein and Freymueller, ...
... consistent with the mechanisms and recurrence of large earthquakes [Stein and Freymueller, ...
Preliminary results of a paleoseismological analysis along the Sahel
... one of the most seismic regions in the western Mediterranean. It is a strategic area because of the location of the capital, Algiers, and other major cities, where population and main social and economic activities are concentrated. Geodynamically, the Tell Atlas corresponds to the passive margin of ...
... one of the most seismic regions in the western Mediterranean. It is a strategic area because of the location of the capital, Algiers, and other major cities, where population and main social and economic activities are concentrated. Geodynamically, the Tell Atlas corresponds to the passive margin of ...
1906 San Francisco earthquake
The 1906 San Francisco earthquake struck the coast of Northern California at 5:12 a.m. on April 18 with a moment magnitude of 7.8 and a maximum Mercalli intensity of XI (Extreme). Devastating fires broke out in the city that lasted for several days. As a result, about 3,000 people died and over 80% of San Francisco was destroyed.The earthquake and resulting fire are remembered as one of the worst natural disasters in the history of the United States alongside the Galveston Hurricane of 1900 and Hurricane Katrina in 2005. The death toll from the earthquake and resulting fire remains the greatest loss of life from a natural disaster in California's history.