scholarly journals The Mediterranean Broad Band Seismographic Network Anno 2005/06

2008 ◽  
pp. 133-149 ◽  
Author(s):  
Salvatore Mazza ◽  
M. Olivieri ◽  
A. Mandiello ◽  
P. Casale
Keyword(s):  
Broad Band ◽  
The Mediterranean ◽  
Seismographic Network

MedNet: the very broad-band seismic network for the Mediterranean

1991 ◽  
Vol 14 (1) ◽  
pp. 79-99 ◽  
Author(s):  
E. Boschi ◽  
D. Giardini ◽  
A. Morelli
Keyword(s):  
Broad Band ◽  
Seismic Network ◽  
The Mediterranean

scholarly journals Crustal structure beneath broad-band seismic stations in the Mediterranean region

2003 ◽  
Vol 152 (3) ◽  
pp. 729-739 ◽  
Author(s):  
Mark van der Meijde ◽  
Suzan van der Lee ◽  
Domenico Giardini
Keyword(s):  
Crustal Structure ◽  
Mediterranean Region ◽  
Broad Band ◽  
Seismic Stations ◽  
The Mediterranean

scholarly journals Improvements in seismic resolution and current limitations in the Global Seismographic Network

2019 ◽  
Vol 220 (1) ◽  
pp. 508-521 ◽  
Author(s):  
A T Ringler ◽  
J Steim ◽  
D C Wilson ◽  
R Widmer-Schnidrig ◽  
R E Anthony
Keyword(s):  
Seismic Noise ◽  
Broad Band ◽  
Earth Tide ◽  
Seismic Signals ◽  
Noise Levels ◽  
Noise Sources ◽  
Long Period ◽  
Seismic Resolution ◽  
Fundamental Limitation ◽  
Seismographic Network

SUMMARY Station noise levels play a fundamental limitation in our ability to detect seismic signals. These noise levels are frequency-dependent and arise from a number of physically different drivers. At periods greater than 100 s, station noise levels are often limited by the self-noise of the instrument as well as the sensitivity of the instrument to non-seismic noise sources. Recently, station operators in the Global Seismographic Network (GSN) have deployed several Streckeisen STS-6A very broad-band borehole seismometers. These sensors provide a potential replacement for the no-longer-produced Streckeisen STS-1 seismometer and the GeoTech KS-54 000 borehole seismometer. Along with showing some of the initial observational improvements from installing modern very broad-band seismometers at depth, we look at current limitations in the seismic resolution from earth tide periods 100 000 s (0.01 mHz) to Nyquist at most GSN sites (0.02 s or 50 Hz). Finally, we show the potential for improved observations of continuously excited horizontal Earth hum as well as the splitting of very long-period torsional modes. Both of these observations make use of the low horizontal noise levels which are obtained by installing very broad-band borehole seismometers at depth.

Chronic Laser Exposure Effects on Rabbit Retina

1972 ◽  
Vol 30 ◽  
pp. 54-55
Author(s):  
Burton B. Silver ◽  
Theodore Lawwill
Keyword(s):  
Laser Irradiation ◽  
Laser Light ◽  
Broad Band ◽  
Argon Laser ◽  
Atropine Sulfate ◽  
Ultrastructural Changes ◽  
Laser Exposure ◽  
Rabbit Retina ◽  
Histological Changes ◽  
Threshold Doses

Dutch-belted 1 to 2.5 kg anesthetized rabbits were exposed to either xenon or argon laser light administered in a broad band, designed to cover large areas of the retina. For laser exposure, the pupil was dilated with atropine sulfate 1% and pheny lephrine 10%. All of the laser generated power was within a band centered at 5145.0 Anstroms. Established threshold for 4 hour exposures to laser irradiation are in the order of 25-35 microwatts/cm2. Animals examined for ultrastructural changes received 4 hour threshold doses. These animals exhibited ERG, opthalmascopic, and histological changes consistent with threshold damage.One month following exposure the rabbits were killed with pentobarbitol. The eyes were immediately enucleated and dissected while bathed in 3% phosphate buffered gluteraldehyde.

Real-ear Masking Calibration for Portable Pure-Tone Audiometers

1984 ◽  
Vol 15 (4) ◽  
pp. 289-294
Author(s):  
Martin S. Robinette ◽  
Robert H. Brey
Keyword(s):  
Pure Tone ◽  
Broad Band ◽  
Resistive Network ◽  
Many Instruments

A transformer mixing network is described which allows the calibration of broad-band masking for portable audiometers that lack a built-in mixing network. For many instruments the transformer network is preferable to the resistive network previously published.

115 Heart failure mortality due to ischemic etiology: is it the same in the Mediterranean lifestyle?

2006 ◽  
Vol 5 (1) ◽  
pp. 28-29
Author(s):  
M JIMENEZNAVARRO ◽  
J GOMEZDOBLAS ◽  
G GOMEZHERNANDEZ ◽  
A DOMINGUEZFRANCO ◽  
J GARCIAPINILLA ◽  
...  
Keyword(s):  
Heart Failure ◽  
The Mediterranean
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