Results 101 to 110 of about 152,674 (295)
Lunar seismic profiling experiment natural activity study [PDF]
The Lunar Seismic Experiment Natural Activity Study has provided a unique opportunity to study the high frequency (4-20 Hz) portion to the seismic spectrum on the moon.
Duennebier, F. K.
core +1 more source
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Risk‐based seismic assessments using demand curves that provide mean annual exceedance rates for various system demand levels are increasingly being adopted. Such assessments combine the seismic hazard curve with fragility functions for each demand level, serving as a basis to quantify the average annual losses from system damage. Constructing
Zeyad Khalil +2 more
wiley +1 more source
Tectonomagnetic and VLF electromagnetic signals in Central Italy
Annals of Geophysics, 2004 Tectonomagnetic field observations from absolute magnetic field level measurements were undertaken in Central Italy in an area extending between latitude 41°N and 43°N and between longitude 13°E and 15°E.
P. Palangio +4 more
doaj +1 more source
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Nonstructural components (NSCs) installed in large‐span reticular structures were frequently severely damaged during earthquakes, even when the primary structure remained intact. Existing seismic design specifications for NSCs were predominantly developed for upright structures such as multi‐storey buildings and offer no guidance for reticular
Xudong Zhi +6 more
wiley +1 more source
Earthquake ScienceAt 20:08, on September 18, 2024, an M4.7 earthquake occurred along the Tanlu fault zone in the Feidong County of Hefei, Anhui Province. This earthquake is the largest event in the modern history of Hefei, which caused substantial social impact. To reveal
Hongyu Ni +19 more
doaj +1 more source
Seismic activities around Shizuoka City.
Papers in Meteorology and Geophysics, 1986 1983年以降、気象庁で採用している新しい震源計算方法によって再計算された震源を用いて、静岡市付近の地震活動を再検討した。地震の分布には、伊豆半島南端と静岡市付近を結ぶテクトニックな構造線を境にして、その北東側と南西側でははっきりした違いが存在する。すなわち北東側には 30 km より深い地震はほとんど存在せず、10 km より浅い地震は非常に少ない。この構造線に直交する方向の断面図からも、この線を境にして震源の深さ分布が変わっていることがはっきりと認められる。また、ごく浅い地震は構造線の周辺に分布する傾向がみられる。 地震活動の時間的変化に関してみると、1974年伊豆半島沖地震が発生する以前は構造線の近くに比較的集中していたのに対して、この地震のあと、構造線の北東側の領域で地震活動が復活した ...
Akio Yoshida +2 more
openaire +2 more sources
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT To enhance the structural robustness of bridges, a rocking arch‐shaped segmental pier with a double sliding system was previously proposed as a low‐cost solution to protect bridges in developing countries. The rocking behavior is triggered by halting the sliding motion, which increases the horizontal load‐bearing capacity and limits ...
Shengming Feng +6 more
wiley +1 more source
Connection between Variations of the Probability Distribution of the Recurrence Time and Phases of the Seismic Activity. [PDF]
Entropy (Basel), 2023 Varini E, Rotondi R.
europepmc +1 more source
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT In February 2023, a comprehensive series of shaking table tests were conducted at the E‐Defense facility, the world's largest three‐dimensional earthquake simulator, on a full‐scale 10‐story steel moment‐resisting frame supplemented with BRBs.
Jun Fujiwara +9 more
wiley +1 more source
Dizhen xuebao随着川南页岩气快速规模化地开采，四川长宁地区地震频发，不仅发生了大量微地震而且伴随发生了多个中强地震，地震风险持续增高。本文基于长宁地区的107个密集台站在2021年4月28日至2022年6月30日期间所记录的连续波形使用深度学习震相拾取方法所构建的观测区高分辨率地震目录，通过最大似然法计算了四川长宁页岩气开发区频度−震级关系式中的b值，对b值的时空分布特征进行了分析。结果表明：长宁地区的平均b值为1.06，长宁—双河采卤区的b值为1.25，而长宁—昭通页岩气开采区的b值为1.01 ...
Liu Huang +6 more
doaj +1 more source