A seismic array is a system of linked seismometers arranged in a regular geometric pattern (cross, circle, rectangular etc.) to increase sensitivity to earthquake and explosion detection. A seismic array differs from a local network of seismic stations mainly by the techniques used for data analysis.[1] The data from a seismic array is obtained using special digital signal processing techniques such as beamforming, which suppress noises and thus enhance the signal-to-noise ratio (SNR).
The earliest seismic arrays were built in the 1950s in order to improve the detection of nuclear tests worldwide. Many of these deployed arrays were classified until the 1990s. Today they have become part of the International Monitoring System (IMS) as primary or auxiliary stations. Seismic arrays are not only used to monitor earthquakes and nuclear tests but also used as a tool for investigating nature and source regions of microseisms as well as locating and tracking volcanic tremor and analyzing complex seismic wave-field properties in volcanic areas.
^Bormann, P (2012). New Manual of Seismological Observatory Practice (NMSOP-2). IASPEI. p. Chapter 9.
A seismicarray is a system of linked seismometers arranged in a regular geometric pattern (cross, circle, rectangular etc.) to increase sensitivity to...
A seismic wave is a mechanical wave of acoustic energy that travels through the Earth or another planetary body. It can result from an earthquake (or...
models of different resolutions based on seismic wavelength, wave source distance, and the seismograph array coverage. The data received at seismometers...
lines) are performed using an array of seismographs or geophones and an energy source. The methods depend on the fact that seismic waves have differing velocities...
global seismic noise expanded widely in the 1950s with the enhancement of seismometers to monitor nuclear tests and the development of seismicarrays. The...
are many, forming a seismicarray. The emphasis is on precision since much can be learned about the fault mechanics and seismic hazard, if the locations...
(07:29:34 GMT), seismic detectors at the Norwegian seismicarray (NORSAR) and in other locations around the world recorded a seismic event of magnitude...
contacts, such as quiet, low noise-emitting submarine threats, or seismic signals. A towed array offers superior resolution and range compared with hull-mounted...
a transatlantic satellite link connected ARPANET to the Norwegian SeismicArray (NORSAR), via the Tanum Earth Station in Sweden, and onward via a terrestrial...
dimensional array geometries. Array structure can be defined as a set of sensors that are spatially separated, e.g. radio antenna and seismicarrays. The sensors...
event registered 1.6 on the Richter magnitude scale. There is a second seismicarray approximately 3 km north of the main observatory established by the...
original project, the Norwegian SeismicArray. Located at Kjeller, north of Oslo, NORSAR runs and maintains seismicarrays in Norway and it is the designated...
Seismic data acquisition is the first of the three distinct stages of seismic exploration, the other two being seismic data processing and seismic interpretation...
reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite or Tovex blast, a specialized air gun or a seismic vibrator...
net. In 1971 NORSAR (Norwegian SeismicArray) at Kjeller just outside Oslo was connected by satellite to the SDAC (Seismic Data Analysis Center) in Virginia...
A seismic source is a device that generates controlled seismic energy used to perform both reflection and refraction seismic surveys. A seismic source...
employed in seismic refraction surveys. This equipment consists of a seismograph, geophones placed in an array, and a seismic source. An array consists of...
the ARPANET were rare. Connections were made in 1973 to the Norwegian SeismicArray (NORSAR), and to Peter Kirstein's research group at University College...
Flexible Array allowed sites to be targeted in a more focused manner than the broad Transportable Array. Natural or artificially created seismic waves could...
Einarsson conducted a seismic investigation on the Krafla Caldera in Northeast Iceland. In this study, Einarsson placed a dense array of seismometers over...
ARPANET were sparse. Connections were made in 1973 to the Norwegian SeismicArray (NORSAR), via a satellite link at the Tanum Earth Station in Sweden...
A seismic metamaterial, is a metamaterial that is designed to counteract the adverse effects of seismic waves on artificial structures, which exist on...
~927 m thick layer with a faster seismic velocity of 1200 ms−1. Explosive package #1, the furthest from the geophone array, generated slower travel times...
(University Graduate Center) Oslo Metropolitan University NORSAR (Norwegian SeismicArray) Historically, Kjeller has also been the location for a small aircraft...
310 mi) away detected signals that Norwegian SeismicArray (NORSAR) scientists interpreted as a weak seismic event in the area of the dam at 2:35 A.M. Ukrainian...
Icelandic Strong-motion Array. The ICEARRAY network is a seismicarray of 14 strong-motion stations located within the South Iceland Seismic Zone. Each station...
under the assistance of seismic signals. Ambient noise, which is not associated with the earthquake, is the background seismic signals. Given that the...
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