Results 61 to 70 of about 3,178,879 (308)

Time-Frequency-Based Separation of Earthquake and Noise Signals on Real Seismic Data: EMD, DWT and Ensemble Classifier Approaches

Sensors
Earthquakes are sudden and destructive natural events caused by tectonic movements in the Earth’s crust. Although they cannot be predicted with certainty, rapid and reliable detection is essential to reduce loss of life and property.
Yunus Emre Erdoğan, Ali Narin
doaj   +1 more source

Earthquake detection by computer

Eos, Transactions American Geophysical Union, 1972
A new computer model has been developed that describes the way rock formations dilate under stress. This computer, used in conjunction with laboratory observations of rock deformation, has provided ‘the first significant step toward predicting the place, time and even magnitude of an impending earthquake,’ according to J.T.
openaire   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source

Earthquake Magnitude Detection Utilizing a Novel Hybrid Earth–Transformer–LSTM Architecture

Future Internet
One of the complicated and demanding tasks in seismology is the reliable detection of earthquakes. The key challenge is that the detection models must be applied to a specific region, and models trained on one region may not perform as well in others ...
Amir A. Ghavifekr, Elman Ghazaei, Mohsen Mirzajani, Paolo Visconti   +3 more
doaj   +1 more source

地震检测与震相自动拾取研究

Dizhen xuebao, 2018
针对微震事件易受噪声干扰等特点，本文将STA/LTA方法和基于方差的AIC方法（var-AIC）相结合，在震相到时初步拾取的基础上，使用台站的德洛内（Delaunay）三角剖分及台站间最大走时差约束来减少噪声干扰的影响. 利用到时进行地震定位之后，根据台站预测到时，在设定的时间窗内对地震震相进行更精细的分析. 特别是针对微震事件信噪比低的特点，设计了基于偏振分析的拾取函数，根据窗内STA/LTA方法和var-AIC方法的拾取结果自动选择合适的值作为震相到时.
Ce Jiang, Jianping Wu, Lihua Fang
doaj   +1 more source

Engineering reconnaissance following the August 24, 2016 M6.0 Central Italy Earthquake [PDF]

, 2017
An earthquake with a moment magnitude reported as 6.0 from INGV (Istituto Nazionale di Geofisica e Vulcanologia); occurred at 03:36 AM (local time) on 24 August 2016 in the central part of Italy. The epicenter was located at the borders of the Lazio,
Bozzoni F., Penna A, Zimmaro P., Gori S., Katsiveli E., Psycharis I., De Risi R, Scasserra G., Mylonakis G., Lanzo G., Di Sarno L., Foti S., Grasso N, Giallini S., Reimschiissel B., Foti S, Sica S, Dashti S., Santucci de Magistris F., Dashti S, Kayen R E, Kishida T, Chiaradonna A., De Risi R., Di Sarno L, Katsiveli E, Sextos A., Reimschiissel B, Mylonakis G, Giallini S, Lanzo G, Galadini F., Vintzilaiou E., D'Onofrio A., Fragiadakis M., Psycharis I, Kishida T., Stewart J P, Chiabrando F, Silvestri F, Kayen R. E., Bozzoni F, Franke K, Sextos A, Zimmaro P, Aversa S., Di Pietra V., Grasso N., Alexander N, Durante M G, De Silva F., Gori S, Franke K., Tropeano G, Pagliaroli A., Simonelli A. L., Tommasi P., Simonelli A L, Mucciacciaro M., Castiglia M, Vintzilaiou E, Penna A., Aversa S, Di Pietra V, D’Onofrio A, Tommasi P, Stewart J. P., De Silva F, Fragiadakis M, Pagliaroli A, Santucci de Magistris F, Alexander N., Galadini F, Silvestri F., Chiabrando F., Sica S., Chiaradonna A, Scasserra G, Castiglia M., Falcucci E, Durante M. G., Mucciacciaro M, Pelekis P, Falcucci E.   +83 more
core  

The Mw7.8 2016 Kaikōura earthquake

, 2017
We provide a summary of the surface fault ruptures produced by the Mw7.8 14 November 2016 Kaikōura earthquake, including examples of damage to engineered structures, transportation networks and farming infrastructure produced by direct fault surface ...
Sauer, K, Juniper, Z, Madugo, C, Wandres, A, Toy, Virginia, Asher, C, Lawson, S, Litchfield, NJ, Kearse, J, Gasston, C, Ries, WF, Hale, D, Carne, R, Fenton, C, Fenton, F, Howarth, J, Williams, J, Lamarche, Geoffroy, Noble, D, Villamor, Pilar, Hall, Brendan S, Barnes, Philip, Barrell, David, Cochran, Ursula, Cox, Simon, Townsend, Dougal, Stahl, T, Borella, Josh, Lukovic, Biljana, Pedley, Kate, Heron, David, Hatem, Alex, Little, Tim, Pettinga, Jarg, Villeneuve, Marlene, Grimshaw, Chris, Cockcroft, Matt, Zinke, Robert, Bischoff, Alan, Hamling, Ian, Khajavi, Narges, Mountjoy, Joshu, Hemphill-Haley, Mark, Kane, Tim, Van Dissen, Russ J, Langridge, Robert M, Manousakis, I, Nicol, Andy, McColl, Sam, Benson, Adrian, Barrier, Andrea, Stirling, Mark W, Hao, Ken X, Duke, Grace, Rowland, Julie V, Strong, Delia, Woelz, Susanne   +56 more
core   +1 more source

2022 Mw 6.6 Luding, China, Earthquake: A Strong Continental Event Illuminating the Moxi Seismic Gap

, 2023
On 5 September 2022, an Mw 6.6 strike-slip earthquake occurred in Luding, Sichuan, China. It illuminates the seismic gap on the southern end of Xianshuihe fault zone, that is Moxi segment, and is the most damaging earthquake in Chinese Mainland since ...
Fang, Lihua, Jiang, Ce, Zhu, Aiyu, Yijian Zhou, Yan, Lijun, Zhou, Yijian, Wang, Shiguang, Wu, Jianping, Long Zhang, Zhang, Long, Shanshan Liang, Shiguang Wang, Ce Jiang, Yuexin Li, Lihua Fang, Bo Li, Jinrong Su, Zhang, Xu, Xu Zhang, Lijun Yan, Jianping Wu, Liang, Shanshan, Li, Bo, Su, Jinrong, Aiyu Zhu, Li, Yuexin   +25 more
core   +1 more source

Fiber-optic earthquake detection [PDF]

Science, 2017
Seismology The seismic networks used to detect earthquakes are limited spatially because they require expensive seismometers to be placed, monitored, and maintained. Lindsey et al. show how fiber optics can be used for seismic recording, using a technique known as distributed acoustic sensing (DAS). Three examples show how DAS can detect ground motions—
openaire   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source