scholarly journals Unprecedented seismic swarm in the Maurienne valley (2017–2019) observed by the SISmalp Alpine seismic network: operational monitoring and management

2021 ◽  
Vol 353 (S1) ◽  
pp. 1-18
Author(s):  
Philippe Guéguen ◽  
Gael Janex ◽  
Jérôme Nomade ◽  
Mickael Langlais ◽  
Agnès Helmstetter ◽  
...  
Keyword(s):  
Seismic Network ◽  
Operational Monitoring ◽  
Seismic Swarm

Micro-seismicity of the Northern Sea of Galilee - Before and During the July-August 2018 Seismic Swarm

2020 ◽  
Author(s):  
Ittai Kurzon
Keyword(s):  
Seismic Activity ◽  
Time Windows ◽  
Sampling Rate ◽  
Seismic Network ◽  
Seismic Stations ◽  
Seismic Swarm ◽  
The North ◽  
Seismic Catalogue ◽  
High Sampling ◽  
High Sampling Rate

<p>This study presents observations and analysis from a high-sampling-rate micro-seismic network, located at the north of the Sea of Galilee, Israel. Stations’ locations were chosen following the seismic swarm at the North of the Sea of Galilee, in October 2013, aiming to perceive a better understanding of the seismicity and structure of this area, in light of that anomaly seismic swarm, and of the seismic activity along the Dead Sea Fault. The micro-seismic network was active between May 2016 to August 2018, with six stations altogether, in distances of 3-5km around the northern Sea of Galilee.  Each of the micro-seismic stations had two collocated sensors: 1) GS-1 Geospace, 1 Hz vertical seismometers, sampled at 500 samples per second, and 2) 3-channel Episensor embedded in a Rock+ Kinemetrics datalogger, sampled at 200 samples per second. Towards the dismantling of the network, another swarm, stronger in magnitude, and longer in duration, has occurred in July-August 2018, roughly at the same location. Meanwhile, a significant upgrade of the Israel Seismic Network (ISN) was taking place, also densifying the number of stations around the Sea of Galilee.</p><p>The seismic processing presented here has many steps of verification, at all levels: detection, association, and location.  Processing begins with the local high-sampling-rate micro-seismic stations, tuning the most appropriate micro-seismic detectors, and association, location and magnitude parameters. Then this new generated micro-seismic catalogue is used to reveal lower magnitude events within the ISN stations, followed by relocation and re-magnitude estimations, done to those events that have additional information from the ISN stations. Running this process for increasing time-windows, it is demonstrated how the use of micro-seismic instrumentation can increase the seismic catalogue by an order of magnitude, providing higher resolution of the seismicity, both in space and time.</p><p>These efforts, of increasing the seismic catalogue, and improving their locations, are utilised for two main goals: a) obtaining a clearer picture of the seismicity and structure in the area before and during the seismic swarm of July-August 2018, b) Zooming into the interesting micro-seismic activity just before the initiation of the swarm.</p>

scholarly journals Recent seismicity before the 24 August 2016 Mw 6.0 Central Italy Earthquake as recorded by the ReSIICO seismic network

2016 ◽  
Vol 59 ◽  
Author(s):  
Simone Marzorati ◽  
Marco Cattaneo ◽  
Massimo Frapiccini ◽  
Giancarlo Monachesi ◽  
Chiara Ladina
Keyword(s):  
Central Italy ◽  
Seismic Network ◽  
Seismic Sequence ◽  
L’Aquila Earthquake ◽  
Preliminary Results ◽  
Seismic Sequences ◽  
Seismic Swarm ◽  
Central Italy Earthquake ◽  
2009 L’Aquila Earthquake ◽  
Preparatory Phase

The seismicity of the last four years before the August 24 2016 01:36 UTC M<sub>W</sub> 6.0 earthquake that struck central Italy is presented with the aim to understand the preparatory phase of the event. In contrast with the 2009 L’Aquila earthquake that was preceded by a seismic sequence and the 2013-2015 Gubbio seismic swarm that, to date, is ended without any strong event, our preliminary results don’t show seismic sequences in the last months previous the mainshock of the August 24 2016 and a low similarity between seismicity clusters in the last four years and the foreshocks.

The first 20 years of CALNET, the Northern California seismic network

1992 ◽  
Author(s):  
D.H. Oppenheimer ◽  
Fred W. Klein ◽  
Jerry P. Eaton
Keyword(s):  
Seismic Network ◽  
Northern California

TEM Sample Prep Tool Matching—DualBeam FIB Cut Look and Measure Monitoring for Process Control and Development in a 300 mm IC Fab

2016 ◽  
Author(s):  
Jangbae Jeon
Keyword(s):  
Process Control ◽  
Sample Preparation ◽  
Continuous Improvement ◽  
Process Time ◽  
Operational Monitoring ◽  
Thickness Control ◽  
Running Time ◽  
End Products ◽  
Novel Method

Abstract This work presents a novel method of continuous improvement for faster, better and cheaper TEM sample preparation using Cut Look and Measure (CLM). The improvement of the process is executed by operational monitoring of daily beam conditions, end products, bulk thickness control, recipe usage and tool running time. This process produces a consequent decrease in rework rate and process time. In addition, it also increases throughput with better quality TEM samples.

THE JAMAICA EDUCATIONAL SEISMIC NETWORK (JAESN) AS A CATALYST FOR GEOSCIENCE EDUCATION

2016 ◽  
Author(s):  
Arpita Mandal ◽  
◽  
Katherine K. Ellins ◽  
Rose-Ann Smith ◽  
Rupert Green ◽  
...  
Keyword(s):  
Seismic Network ◽  
Geoscience Education
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