Table of Contents
Acronyms, etc.
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2-D, 2D, 3-D, 3Dtwo-dimensional, three-dimensional, etc.
ABCEAnnual Bulletin of Chinese Earthquakes
ACDAdvanced Concept Demonstration
AFRLAir Force Research Laboratory
AFTACAir Force Technical Applications Center
AK135seismic travel time model
ANFOAmmonium Nitrate Fuel Oil
ANOVA3analysis of variance code
ArcViewcommercial GIS software (used in Knowledge Base)
ARSAAutomated Radioxenon Analyzer/Sampler
ASSEAltai-Sayan Seismological Expedition
ATOCAcoustic Thermometry of the Ocean Climate
BBbroad band
BDSNBerkeley Digital Seismic Network
CANCCorrelated data Adaptive Noise Canceling
CauSIN Caucasus Seismic Information Network
CDSNChinese Digital Seismic Network
CEACommissariat à l'Energie Atomique (French bulletin)
ChISSRussian abbreviation for multichannel spectral seismometer
CLVDCompensated Linear Vector Dipole
CMTHarvard Centroid Moment Tensor
CodaMagtool to implement magnitude calculations (Mayeda, 1993; Mayeda and Walter, 1996)
CORBACommon Object Request Broker Architecture (data communications tool)
CRUST2.0crustal model (Bassin et al., 2000)
CTBTComprehensive Nuclear-Test-Ban Treaty
CTBTOComprehensive Nuclear-Test-Ban Treaty Organization
CUUniversity of Colorado
CUB2.03D global models (Shapiro et al., 2002)
CU-BoulderUniversity of Colorado, Boulder
DB24Geotech Remote Digitizer
DMCData Management Center
DOBdepth of burial
DoDDepartment of Defense
DOEDepartment of Energy
DOFdegrees of freedom
DOSDepartment of State
DSSdeep seismic sounding
DTRADefense Threat Reduction Agency
EDREarthquake Data Reports
EHBEngdahl, E.R., van der Hilst, R. & Buland, R., 1998. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seismol. Soc. Amer., 88, 722-743
EMelectro magnetic
ERLEarth Resources Laboratory
ERSEuropean Remote Sensing (satellites)
ESRIEnvironmental Systems Research Institute
ESRI Environmental Systems Research Institute (makers of ArcInfo, ArcIMS, ArcGIS, etc. []
ETOPO5terrain model
ETTCEmpirical Travel Time Corrections
EventIDtool to implement event discrimination (Hartse et al., 1997; Walter et al., 1999)
EvLoclocation software
FSPSfrequency-slowness power spectra
Fstat, F-statF-statistic
FSUFormer Soviet Union
GBFgeneralized beamforming
GDAISGeneral Dynamics Advanced Information Systems
GIIGeophysical Institute of Israel
GISGeographical Information System
GMELgrid multiple-event location or multiple-event location algorithm
GSELgrid single-event location or single-event location algorithm
GSNground station network
GUIgraphic user interface
Guralp CMG-3T3-component broadband seismometer
HDChypocentroidal (or hypocentral) decomposition
HIMNTHimalayan Nepal Tibet Seismic Experiment
HPGeHigh Purity Germanium
HydroCAMHydroacoustic Coverage Assessment Model
HypoDDhypo double-difference
IASPEIInternational Association of Seismology and Physics of the Earth's Interior
IASPEI91standard earth model
IDCInternational Data Center
IDGRussian Institute for the Dynamics of the Geospheres
IKONOSsatellite-based imagery acquisition systems, 4m multispectral and 1m panchromatic
IMSInternational Monitoring System
INDEPTH II, IIIexperiments
InfraMAPInfrasound Modeling of Atmospheric Propagation
InSARInterferometric Synthetic Aperture Radar
IRISIncorporated Research Institutions for Seismology
IRPintegrated research product
ISCInternational Seismological Centre
ISTCInternational Science and Technology Center
JAXBJava Architecture for XML Binding
JHDJoint Hypocenter Determination
KACSTKing Abdulaziz City for Science and Technology
KBKnowledge Base
KBCITKnowledge Base Calibration Integration Tool
KIGAMKorean Institute of Geology and Mining or Korea Institute of Geosciences and Mineral Resources
KLDKarhunen-Loive decomposition
KMAKorean Meteorological Administration
KOERIKandilli Observatory Earthquake Research Institute
KRSCKola Regional Seismological Centre
LANLLos Alamos National Laboratory
LBNLLawrence Berkeley National Laboratory
LDAlinear discriminant analysis
Lgregional seismic near surface shear phase
LLNLLawrence Livermore National Laboratory
LOCOOLOCator Object Oriented (program code)
Matlabcommercial software application
MatSeisseismic analysis package developed by SNL using Matlab
mbbody wave magnitude
MCMCMarkov Chain Monte Carlo
Mdduration magnitude
MDACmagnitude and distance amplitude corrections
MDAC2Magnitude and Distance Amplitude Correction procedure (Walter and Taylor, 2002)
ME/NA/WEMiddle East/North Africa/Western Europe
MFAMultiple Filter Analysis
MITMassachusetts Institute of Technology
MOUMemorandum of Understanding
Mssurface wave magnitude
MSEmean squared error
MSISthermospheric atmospheric model
MSISEtotal atmospheric model
MUmagnitude unit
MwMoment Magnitude
NA-22Office of Nonproliferation Research and Engineering
NCEDCNorthern California Earthquake Data Center
NEICNational Earthquake Information Center
NEM R&ENuclear Explosion Monitoring Research and Engineering
NK ATDNorth Korea Advanced Technology Demonstration
NNSANational Nuclear Security Administration
NOAANational Oceanic and Atmospheric Administration
NOGAPSNavy Operational Global Atmospheric Prediction System
NRLNaval Research Laboratory
NTSNevada Test Site
OFISOptical Fiber Infrasound Sensors
ORBobject request broker
ORLOADERsoftware package
PANDACERI's portable network - The PANDA stations were deployed in the central New Madrid seismic zone during October 1989 - August 1992.
PASSCALIRIS program that manages seismic equipment
PDEPreliminary Determination of Epicenters
PDFPortable Document Format
Pglocal and regional seismic phase
PGLParametric Grid Library
PhaseMatchtool that implements match filtering to isolate surface waves (Herrin and Goforth, 1977)
PMCCProgressive Multichannel Cross-Correlation
PMELProgressive Multiple Event Location or Pacific Marine Environmental Laboratory
PMFPhase Matched Filtering
Pnregional seismic compressional phase
PNEpeaceful nuclear explosions
PNNLPacific Northwest National Laboratory
PPDposterior probability distribution
PREM Preliminary Reference Earth Model (Dziewonski and Anderson, 1981)
PrepCom Preparatory Commission
PS3623D global models (Antolik et al., 2002)
PSDsPower Spectral Densities
PSUPenn State University
P-waveprimary wave
QQ Factor
QDAquadratic discriminant analysis
RASARadionuclide Aerosol Sampler Analyzer
RBAPRegional Body-wave Amplitude Processor
RDBrelational database
RDSSResearch and Development Support Services
REBReviewed Event Bulletin
REFTEK or RefTek72a 24-bit data recorder
rftn96program suite for determining crustal structure
RMSroot mean square (errors)
RUMmantle velocity model
SAseismic-acoustic or simulating annealing
SACSeismic Analysis Code
SAICScience Applications International Corporation
SAN2000BSAIC Authenticator/Formatter
SASCsSlowness-Azimuth Station Corrections
SBSOSerialized Binary Stream Object
SDASSeismic Data Acquisition System
SDISpatial Data Interface (application)
SLUSaint Louis University
SMDCSpace Missile Defense Command (Army)
Snregional seismic shear phase
SNRsignal-to-noise ratio
SNUSeoul National University
SPShort Period
SPOThigh-resolution imagery products are 10m panchromatic
SRDSystem Requirement Document or Secret Restricted Data
SRDBSeismic Research Database
SSSSensor Site Subsystem (AFTAC)
SSSCssource-specific station corrections or site-specific station corrections
STS-2Streckeisen seismometer model STS 2
surf96program suite for determining crustal structure
SUSstationary uncorrelated scattering or signals, underwater sound
SVDsingular value decomposition
S-wavesecondary wave
TMthreshold monitoring
TPCtactical pilotage chart
T-phasehydroacoustic phase
UCBUniversity of California, Berkeley
UCSDUniversity of California, San Diego
UNEunderground nuclear explosions
UNRUniversity of Nevada, Reno
USGSUnited States Geological Survey
USNDCUnited States National Data Center
UWEunderwater explosions
VELESTsoftware program
VEXToolViewing and EXtraction Tool
VMAXVariable-Period, Maximum Magnitude Estimation
WCCwaveform cross-correlation
WGworking group
WINPAK3DP-wave velocity model for India and Pakistan
WWSSNWorld Wide Standard Seismograph Network
YSKPYellow Sea Korean Peninsula
Station CodeLocation and/or description
AAKAla-Archa (Kyrgyzstan)
AKTOAktyubinsk Auxiliary Seismic Station
APAApatity station (array)
ARCESseismic array in northern Norway
AS049auxilliary seismic IMS station #49 on Mount Merron, Israel
BJIBeijing (Baijiatuan; Peking)
BRARseismic array in Belbasi, Turkey
BRVKBorovoye auxiliary seismic station
CHGChiang Mai
CHNARChulwon (seismo-acoustic array)
CMBColumbia College
EILElat (Eilat) (seismic)
FINESseismic array in southern Finland
GEOFONglobal seismic Broadband Digital Network; Potsdam; Germany
Geoscopeglobal Seismic broadband network; France
H01Cape Leeuwin
H08Diego Garcia
HLRHighlands Ranch (closed)
KEVKevo regional station
KNETKyrgyz Broadband Seismic Network
KSARseismic array in Wonju, Korea
KURKKurchatov Auxiliary Seismic Station
LSALhasa (Tibet, China)
LVZLovozero regional station
MAKZMaqanshy (Makanchi)
MEDNETMedNet digital seismic broadband network; Italy
MRNIMount Meron (old seismic station that has been replaced by AS049)
NORESseismic array in southern Norway
NRIS (NRI)Noril'sk
NVARseismic array in Mina, Nevada
OBNObninsk seismic station
PDYPeleduy seismic station
PFOPinon Flat Observatory
PS38seismic array in central Saudi Arabia
SPITSseismic array in Spitsbergen
TLYTalaya seismic station
ULNUlaanbaatar, (Mongolia)
WMQUrumqi (Wulumuchi) seismic station
XANXi'an (Hsian)
YKAseismic array in Yellowknife, Canada
SOFAR Channela layer of water deep in the ocean (near Bermuda it's around 1000 m deep) where the speed of sound is at a minimum. Sound waves can get caught in this channel and travel hundreds of kilometers. The SOFAR channel is formed by the interplay between changes in ocean temperature and pressure with increasing depth. Temperature and pressure are the two main factors that determine the speed of sound in the ocean.