Table of Contents Acronyms, etc.	ToC

Acronym	Definition
2-D, 2D, 3-D, 3D	two-dimensional, three-dimensional, etc.
ABCE	Annual Bulletin of Chinese Earthquakes
ACD	Advanced Concept Demonstration
AFRL	Air Force Research Laboratory
AFTAC	Air Force Technical Applications Center
AK135	seismic travel time model
ANFO	Ammonium Nitrate Fuel Oil
ANOVA3	analysis of variance code
ArcView	commercial GIS software (used in Knowledge Base)
ARSA	Automated Radioxenon Analyzer/Sampler
ASSE	Altai-Sayan Seismological Expedition
ATOC	Acoustic Thermometry of the Ocean Climate
BB	broad band
BDSN	Berkeley Digital Seismic Network
Be-7	beryllium-7
CANC	Correlated data Adaptive Noise Canceling
CauSIN	Caucasus Seismic Information Network
CDSN	Chinese Digital Seismic Network
CEA	Commissariat à l'Energie Atomique (French bulletin)
ChISS	Russian abbreviation for multichannel spectral seismometer
CLVD	Compensated Linear Vector Dipole
CMT	Harvard Centroid Moment Tensor
CodaMag	tool to implement magnitude calculations (Mayeda, 1993; Mayeda and Walter, 1996)
CORBA	Common Object Request Broker Architecture (data communications tool)
CRUST2.0	crustal model (Bassin et al., 2000)
CTBT	Comprehensive Nuclear-Test-Ban Treaty
CTBTO	Comprehensive Nuclear-Test-Ban Treaty Organization
CU	University of Colorado
CUB2.0	3D global models (Shapiro et al., 2002)
CU-Boulder	University of Colorado, Boulder
DB24	Geotech Remote Digitizer
DD	double-difference
DMC	Data Management Center
DOB	depth of burial
DoD	Department of Defense
DOE	Department of Energy
DOF	degrees of freedom
DOS	Department of State
DSS	deep seismic sounding
DTRA	Defense Threat Reduction Agency
EDR	Earthquake Data Reports
EHB	Engdahl, 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
EM	electro magnetic
ERL	Earth Resources Laboratory
ERS	European Remote Sensing (satellites)
ESRI	Environmental Systems Research Institute
ESRI	Environmental Systems Research Institute (makers of ArcInfo, ArcIMS, ArcGIS, etc. [http://www.esri.com/company/about/history.html]
ETOPO5	terrain model
ETTC	Empirical Travel Time Corrections
EventID	tool to implement event discrimination (Hartse et al., 1997; Walter et al., 1999)
EvLoc	location software
FSPS	frequency-slowness power spectra
Fstat, F-stat	F-statistic
FSU	Former Soviet Union
GBF	generalized beamforming
GDAIS	General Dynamics Advanced Information Systems
GII	Geophysical Institute of Israel
GIS	Geographical Information System
GMEL	grid multiple-event location or multiple-event location algorithm
GSEL	grid single-event location or single-event location algorithm
GSN	ground station network
GT	ground-truth
GUI	graphic user interface
Guralp CMG-3T	3-component broadband seismometer
HDC	hypocentroidal (or hypocentral) decomposition
HIMNT	Himalayan Nepal Tibet Seismic Experiment
HPGe	High Purity Germanium
HydroCAM	Hydroacoustic Coverage Assessment Model
HypoDD	hypo double-difference
Hz	hertz
IASPEI	International Association of Seismology and Physics of the Earth's Interior
IASPEI91	standard earth model
IDC	International Data Center
IDG	Russian Institute for the Dynamics of the Geospheres
IKONOS	satellite-based imagery acquisition systems, 4m multispectral and 1m panchromatic
IMS	International Monitoring System
INDEPTH II, III	experiments
InfraMAP	Infrasound Modeling of Atmospheric Propagation
InSAR	Interferometric Synthetic Aperture Radar
IRIS	Incorporated Research Institutions for Seismology
IRP	integrated research product
ISC	International Seismological Centre
ISTC	International Science and Technology Center
JAXB	Java Architecture for XML Binding
JHD	Joint Hypocenter Determination
KACST	King Abdulaziz City for Science and Technology
KB	Knowledge Base
KBCIT	Knowledge Base Calibration Integration Tool
KIGAM	Korean Institute of Geology and Mining or Korea Institute of Geosciences and Mineral Resources
KLD	Karhunen-Loive decomposition
KMA	Korean Meteorological Administration
KOERI	Kandilli Observatory Earthquake Research Institute
KRSC	Kola Regional Seismological Centre
LANL	Los Alamos National Laboratory
LBNL	Lawrence Berkeley National Laboratory
LDA	linear discriminant analysis
Lg	regional seismic near surface shear phase
LLNL	Lawrence Livermore National Laboratory
LOCOO	LOCator Object Oriented (program code)
Matlab	commercial software application
MatSeis	seismic analysis package developed by SNL using Matlab
mb	body wave magnitude
MCMC	Markov Chain Monte Carlo
Md	duration magnitude
MDAC	magnitude and distance amplitude corrections
MDAC2	Magnitude and Distance Amplitude Correction procedure (Walter and Taylor, 2002)
ME/NA/WE	Middle East/North Africa/Western Europe
MFA	Multiple Filter Analysis
MIT	Massachusetts Institute of Technology
MOU	Memorandum of Understanding
Ms	surface wave magnitude
MSE	mean squared error
MSIS	thermospheric atmospheric model
MSISE	total atmospheric model
MU	magnitude unit
Mw	Moment Magnitude
NA-22	Office of Nonproliferation Research and Engineering
NCEDC	Northern California Earthquake Data Center
NEIC	National Earthquake Information Center
NEM R&E	Nuclear Explosion Monitoring Research and Engineering
NK ATD	North Korea Advanced Technology Demonstration
NNSA	National Nuclear Security Administration
NOAA	National Oceanic and Atmospheric Administration
NOGAPS	Navy Operational Global Atmospheric Prediction System
NRL	Naval Research Laboratory
NTS	Nevada Test Site
OFIS	Optical Fiber Infrasound Sensors
ORB	object request broker
ORLOADER	software package
PANDA	CERI's portable network - The PANDA stations were deployed in the central New Madrid seismic zone during October 1989 - August 1992.
PASSCAL	IRIS program that manages seismic equipment
PDE	Preliminary Determination of Epicenters
PDF	Portable Document Format
Pg	local and regional seismic phase
PGL	Parametric Grid Library
PhaseMatch	tool that implements match filtering to isolate surface waves (Herrin and Goforth, 1977)
PMCC	Progressive Multichannel Cross-Correlation
PMEL	Progressive Multiple Event Location or Pacific Marine Environmental Laboratory
PMF	Phase Matched Filtering
Pn	regional seismic compressional phase
PNE	peaceful nuclear explosions
PNNL	Pacific Northwest National Laboratory
PPD	posterior probability distribution
PREM	Preliminary Reference Earth Model (Dziewonski and Anderson, 1981)
PrepCom	Preparatory Commission
PS362	3D global models (Antolik et al., 2002)
PSDs	Power Spectral Densities
PSU	Penn State University
P-wave	primary wave
Q	Q Factor
QDA	quadratic discriminant analysis
RASA	Radionuclide Aerosol Sampler Analyzer
RBAP	Regional Body-wave Amplitude Processor
RDB	relational database
RDSS	Research and Development Support Services
REB	Reviewed Event Bulletin
REFTEK or RefTek	72a 24-bit data recorder
RELOC	software
rftn96	program suite for determining crustal structure
RMS	root mean square (errors)
RUM	mantle velocity model
SA	seismic-acoustic or simulating annealing
SAC	Seismic Analysis Code
SAIC	Science Applications International Corporation
SAN2000B	SAIC Authenticator/Formatter
SASCs	Slowness-Azimuth Station Corrections
SBSO	Serialized Binary Stream Object
SDAS	Seismic Data Acquisition System
SDI	Spatial Data Interface (application)
SLU	Saint Louis University
SMDC	Space Missile Defense Command (Army)
Sn	regional seismic shear phase
SNR	signal-to-noise ratio
SNU	Seoul National University
SP	Short Period
SPOT	high-resolution imagery products are 10m panchromatic
SRD	System Requirement Document or Secret Restricted Data
SRDB	Seismic Research Database
SSS	Sensor Site Subsystem (AFTAC)
SSSCs	source-specific station corrections or site-specific station corrections
STS-2	Streckeisen seismometer model STS 2
surf96	program suite for determining crustal structure
SUS	stationary uncorrelated scattering or signals, underwater sound
SVD	singular value decomposition
S-wave	secondary wave
TM	threshold monitoring
TPC	tactical pilotage chart
T-phase	hydroacoustic phase
UCB	University of California, Berkeley
UCSD	University of California, San Diego
UNE	underground nuclear explosions
UNR	University of Nevada, Reno
USGS	United States Geological Survey
USNDC	United States National Data Center
UWE	underwater explosions
VELEST	software program
VEXTool	Viewing and EXtraction Tool
VMAX	Variable-Period, Maximum Magnitude Estimation
WCC	waveform cross-correlation
WG	working group
WINPAK3D	P-wave velocity model for India and Pakistan
WWSSN	World Wide Standard Seismograph Network
YSKP	Yellow Sea Korean Peninsula
Station Code	Location and/or description
AAK	Ala-Archa (Kyrgyzstan)
AKTO	Aktyubinsk Auxiliary Seismic Station
ANMO	Albuquerque
APA	Apatity station (array)
ARCES	seismic array in northern Norway
ARS	Arshan
AS049	auxilliary seismic IMS station #49 on Mount Merron, Israel
BJI	Beijing (Baijiatuan; Peking)
BRAR	seismic array in Belbasi, Turkey
BRVK	Borovoye auxiliary seismic station
CHG	Chiang Mai
CHNAR	Chulwon (seismo-acoustic array)
CMB	Columbia College
DUG	Dugway
EIL	Elat (Eilat) (seismic)
ELK	Elko
FINES	seismic array in southern Finland
GEOFON	global seismic Broadband Digital Network; Potsdam; Germany
Geoscope	global Seismic broadband network; France
H01	Cape Leeuwin
H08	Diego Garcia
HFS	Hagfors
HLR	Highlands Ranch (closed)
ISP	Isparta
KAZ	Karuizawa
KEV	Kevo regional station
KMI	Kunming
KNB	Kanab
KNET	Kyrgyz Broadband Seismic Network
KSAR	seismic array in Wonju, Korea
KURK	Kurchatov Auxiliary Seismic Station
LAC	Landers
LSA	Lhasa (Tibet, China)
LVZ	Lovozero regional station
LZH	Lanzhou
MAG	Magadan
MAKZ	Maqanshy (Makanchi)
MALT	Malatya
MEDNET	MedNet digital seismic broadband network; Italy
MNA	Mina
MRNI	Mount Meron (old seismic station that has been replaced by AS049)
NEW	Newport
NIL	Nilore
NORES	seismic array in southern Norway
NRIS (NRI)	Noril'sk
NVAR	seismic array in Mina, Nevada
OBN	Obninsk seismic station
PDY	Peleduy seismic station
PFO	Pinon Flat Observatory
PS38	seismic array in central Saudi Arabia
SEY	Seymchan
SPITS	seismic array in Spitsbergen
SSE	Sheshan
TIXI (TIK)	Tiksi
TLY	Talaya seismic station
TUC	Tucson
ULN	Ulaanbaatar, (Mongolia)
WMQ	Urumqi (Wulumuchi) seismic station
XAN	Xi'an (Hsian)
YAK	Yakutsk
YKA	seismic array in Yellowknife, Canada
ZAL	Zalesovo
SOFAR Channel	a 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.