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Full-waveform inversion of the Japanese Islands region
Full-waveform inversion of the Japanese Islands region

Technical Guidance Note
Technical Guidance Note

... In the case of masonry wall construction, the connection details in Clause 6.1.2 of PD 6697 Recommendations for the design of masonry structures to BS EN 1996-1-1 and BS EN 1996-2 may be assumed to provide effective anchorage of suspended floors to walls where: − straps or restraint type joist hange ...
Inferring fault strength from earthquake rupture properties and the tectonic
Inferring fault strength from earthquake rupture properties and the tectonic

... sedimentary basins, overpressures are generated by mechanical compaction (pressure solution), and can be maintained if overlain by an impermeable cap. Dilatant slip associated with large earthquakes shatters the impermeable barrier, allowing fluid flow and fast diffusion to reduce fluid pressures. T ...
P-Waves and S-Waves
P-Waves and S-Waves

... Explain that volcanic eruptions are one cause of Word Segment: Meaning: earthquakes. The ground shakes when an earthquake occurs. This shaking movement sends shock waves seismo- earthquake through the earth. These seismic waves are recorded -graph something that writes by a seismometer. or record ...
Lateral structural variations of Poisson`s ratio and attenuation
Lateral structural variations of Poisson`s ratio and attenuation

... The velocity values obtained for all of the 17 regions seen in Fig. 4 are displayed on the lefthand side, the attenuation coefficients can be seen on the right, and the velocity and attenuation coefficient values calculated for the whole region are shown at the very bottom. Poisson’s values can be o ...
On the earthquake predictability of fault interaction models
On the earthquake predictability of fault interaction models

File
File

... activity in which you consider the issues of undertaking web-based research. This may have been done during your work on other units in Higher Physics. ...
Response to the Great East Japan by General Insurance
Response to the Great East Japan by General Insurance

... the social and economic circumstances afterwards, along with the experiences from several great earthquake disasters, the earthquake insurance systems have been revised many times. Consequently, amount insured, the limit of amount to be paid, premium rate and the limit of total payment etc have been ...
Acoustic Floating Floor Systems
Acoustic Floating Floor Systems

... GROUND BORNE VIBRATION ...
Transient postseismic mantle relaxation following 2004
Transient postseismic mantle relaxation following 2004

Short-lived tectonic switch mechanism for long-term
Short-lived tectonic switch mechanism for long-term

... subduction zone, this event is consistent with our hypothChile, and Japan. In oblique subduction zones the shear comesis where a mega-thrust earthquake transformed the stress ponent is accommodated in the overriding plate by trenchstate in the arc hosting Santorini into extension or transtenparallel ...
Low seismic-wave speeds and enhanced fluid
Low seismic-wave speeds and enhanced fluid

small-diameter cfrp strands for shear strengthening of steel bridge
small-diameter cfrp strands for shear strengthening of steel bridge

... analytical studies undertaken to examine the use of small-diameter Carbon Fiber Reinforced Polymer (CFRP) strands for shear strengthening of steel structures and bridges. Most of the current research findings on the use of CFRP laminate revealed failure due to de-bonding. The experimental program ex ...
evidence of basin-and-range extensional tectonics in the sierra
evidence of basin-and-range extensional tectonics in the sierra

Earthquake-prone building policy review regulatory impact statement
Earthquake-prone building policy review regulatory impact statement

... One of the main purposes of the Building Act 2004 (the Act) is to ensure that people can use buildings safely and without endangering their health. This purpose is primarily achieved by requiring all new building work to comply with the Building Code (a regulation under the Act). The Act is not retr ...
Tables
Tables

Strain concentration zone along the volcanic front derived by GPS
Strain concentration zone along the volcanic front derived by GPS

1. indonesia : the ring of fire
1. indonesia : the ring of fire

... Intensity. The magnitude of an earthquake is a measure of the amount of energy released during the epoch of the earthquake, which recorded by a seismograph and usually presented as in a Richter Scale, whereas the intensity of an earthquake is a measure of the observed impact of the ground shaking mo ...
Full text
Full text

... analysis dividing the earthquake data into two periods: before and after the seismic activity in June-August 2000. As a result of the analysis, a smaller p-value of 1.2% is obtained for the pre-seismic period, while a larger value of 17% for the post-seismic period. This is in good harmony with the ...
Pole-Tide Modulation of Slow Slip Events at Circum-Pacific
Pole-Tide Modulation of Slow Slip Events at Circum-Pacific

Green et al (2010) - Experimental Studies of Planetary Materials
Green et al (2010) - Experimental Studies of Planetary Materials

... With increasing depth, the two zones progressively approach each other and eventually merge at depths of about 200–250 km. Within experimental error, these double seismic zones in subducting slabs seem to follow the dehydration boundary of antigorite serpentine12,13 (the chemical composition of serp ...
half-cell potentials and the corrosion of steel in concrete
half-cell potentials and the corrosion of steel in concrete

... corroding but not always enough to cause concrete cracking. In cracked concrete, the maximum half-cell potential of the steel was measured to be -0.59 V. In addition to the laboratory tests on small specimens, a prototype-simulated bridge deck was exposed outdoors to periodic wetting and drying of a ...
Seismic structure of the Tengchong volcanic area southwest China
Seismic structure of the Tengchong volcanic area southwest China

... the study area. Source parameters of these events had been determined using P- and S-wave arrival data from all recording stations in the Yunnan Earthquake Network. The estimated uncertainties of the event locations were generally less than few kilometers. In this study, we made two efforts to decre ...
Earthquakes - modelling and monitoring
Earthquakes - modelling and monitoring

... web-based research. It is easy to simply look up a single fact on the internet, but undertaking a more structured project is more complex. Sifting through what is often a large amount of data is demanding. Keeping track of what you are trying to find out is one of the most difficult parts of this ty ...
Epicenter Location
Epicenter Location

... FaultEpicenterFocusFocal Depth-P-WaveS-WaveSeismographSeismogramINTRODUCTION: Earthquakes occur when there is movement within the crust along a fault. This movement creates waves which travel through the Earth. These seismic waves are radiated in every direction from the focus. An earthquake occurs ...
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Seismic retrofit



Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. With better understanding of seismic demand on structures and with our recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged. Prior to the introduction of modern seismic codes in the late 1960s for developed countries (US, Japan etc.) and late 1970s for many other parts of the world (Turkey, China etc.), many structures were designed without adequate detailing and reinforcement for seismic protection. In view of the imminent problem, various research work has been carried out. State-of-the-art technical guidelines for seismic assessment, retrofit and rehabilitation have been published around the world - such as the ASCE-SEI 41 and the New Zealand Society for Earthquake Engineering (NZSEE)'s guidelines. These codes must be regularly updated; the 1994 Northridge earthquake brought to light the brittleness of welded steel frames, for example.The retrofit techniques outlined here are also applicable for other natural hazards such as tropical cyclones, tornadoes, and severe winds from thunderstorms. Whilst current practice of seismic retrofitting is predominantly concerned with structural improvements to reduce the seismic hazard of using the structures, it is similarly essential to reduce the hazards and losses from non-structural elements. It is also important to keep in mind that there is no such thing as an earthquake-proof structure, although seismic performance can be greatly enhanced through proper initial design or subsequent modifications.
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