| I. |
Island |
| IA |
Infrastructure Analyst (BaySys Technologies Inc.); Iowa |
| IACWD |
Interagency Advisory Committee on Water Data |
| IADO |
Instituto Argentino de Oceanografia |
| IAEA |
International Atomic Energy Agency |
| IAEG |
International Assn. of Engineering Geologists |
| IAG |
International Assn. of Geodesy |
| IAGS |
Inter-American Geodetic Survey |
| IAH |
International Association of Hydrogeologists |
| IAHS |
International Assn. of Hydrological Sciences = Assn. Internationaledes Sciences Hydrologiques |
| IALA |
International Assn. of Lighthouse Authorities |
| IALS |
Idaho Assn. of Land Surveyors |
| IAMA |
International Antiquarian Mapsellers Association |
| IAO |
Insurers’ Advisory Organization |
| IAOO |
International Assn. of Assessing Officers |
| IASI |
Infrared Atmospheric Sounding Interferometer |
| IASSIST |
International Association for Social Science Information Service &Technology |
| IAT |
Image Annotation Tape; International Atomic Time |
| IATO |
Italian atlas assembled to order |
| IAWPRC |
International Assn. for Water Pollution Research and Control |
| IB |
Isobar |
| IBC |
International Boundary Commission (U.S.-Canada) |
| IBDF |
Instituto Brasileiro de Desenvolvimento Florestal |
| IBG |
Inst. of British Geographers |
| IBGE |
Instituto Brasileiro de Geografia e Estadistica |
| IBIS |
Image-Based Information System |
| IBM |
International Business Machines (corp.); International boundarymarker |
| IBRD |
International Bank for Reconstruction and Development (WorldBank) |
| IBSP |
Idaho Bureau of State Planning |
| IBWC |
International Boundary and Water Commission (Mexico-U.S.) |
| IC |
Integrated circuit(s) |
| ICA |
International Cartographic Assn. = Assn. CartographiqueInternationale |
| ICACET |
International Cartographic Assn. Committee on Training |
| ICAITI |
Instituto Centro Americano de Investigacion y Tecnica Industrial |
| ICAO |
International Civil Aviation Organiztion |
| ICA-USNC |
International Cartographic Assn. U.S. National Committee |
| ICC |
Institut Cartografic de Catalunya; Interstate Commerce Commission(U.S.); International Cartographic Conference |
| ICCP |
Inst. for Certification of Computer Professionals |
| ICE |
Information Center for the Environment (UCD) |
| ICED |
Intraprofessional Council on Environmental Design |
| ICES |
Institution of Civil Engineers (UK); Initial Graphics ExchangeSpecifications |
| ICEX |
Ice and Climate Experiment |
| ICGC |
Instituto Cubano de Geodesia y Cartografia |
| ICGRS |
Internet-Enabled Continuous Geodetic Reference Station |
| ICGWM |
International Clearinghouse for Ground Water Models |
| ICHC |
International Conference on the History of Cartography |
| ICITV |
Institut de la Carte International du Tapis Vegetale |
| ICM |
Instituto Cartografico Militar |
| ICMP |
Internet Control Message Protocol |
| ICMSSR |
Interagency Committee on Meteorological Services and SupportingResearch |
| ICONA |
Instituto Nacional para la Conservacion de la Naturaleza (Spain) |
| ICR |
Intelligent Character Reader |
| ICT |
Information and communication technologies |
| ICW |
International Computer Works, Inc. |
| ID |
Identification; Interface device; Idaho; Island |
| IDAS |
Image Data Analysis Systems |
| IDC |
International Data Corp. |
| IDCCC |
Interior Digital Cartographic Coordination Committee (U.S.) |
| IDD |
Information and data dissemination |
| IDE |
Imbedded Drive Electronics |
| IDEN |
Identification module |
| IDFG |
Idaho Dept. of Fish and Game |
| IDIMS |
Interactive Digital Image Manipulation System |
| IDIQ |
Indefinite delivery/indefinite quantity |
| IDL |
Idaho Dept. of Lands; Interactive Data Language; Interface DefinitionLanguage |
| IDLH |
Immediately dangerous to life and health |
| IDOT |
Illinois Dept. of Transportation |
| IDR |
Interface drawing |
| IDS |
Information Decision Systems (firm) |
| IDWO |
Intelligence Div., War Office (U.K.) |
| IDWR |
Idaho Dept. of Water Resources |
| IEMVT |
Institut d’Elevage et de Medecine Veterinaire des Pays Tropicaux |
| IEP |
Independent electric plant |
| IERS |
International Earth Rotation Service |
| IES |
Inst. for Environmental Sciences |
| IF |
Frame identification |
| IfAG |
Institut fur Angewandte Geodasie |
| IFF |
Interchange Format File (Commodore Amiga) |
| IFLA |
International Assn. of Library Asociations and Institutions |
| IFN |
Service de l’Inventaire Forestier National (France) |
| IFOV |
Instantaneous Field of View |
| IFP |
Institut Francais de Pondicherry; Institut Francais du Petrole |
| IFR |
Instrument Flight Regulation |
| IFREMER |
Institut francais de recherche pour l’exploitation de la mer |
| iFS |
Internet File System (Oracle Corp.) |
| IFSAR |
Inter-ferometric Synthetic Aperture Radar |
| IFSARE |
Inter-ferometric Synthetic Aperture Radar for Elevation |
| IG |
Instytut Geologiczny (Poland) |
| IGA |
Istituto Geografico de Agostini |
| IGAC |
Instituto Geografico “Agustin Codazzi” |
| IGBF |
Institut Geographique de Burkina Faso |
| IGBP |
International Geosphere-Biosphere Programme |
| IGC |
International Geologic Congress; Intelligent Graphics Controller;Informative Graphics Corp. |
| IGCI |
Institut Geographique de la Cote d’Ivoire |
| IGCP |
International Geological Correlation Program; Instituto Geografico eCadastral (Portugal) |
| IGDC |
Interagency Geographic Data Committee (U.S.) |
| IGDS |
Interactive Graphics Design System (software); Intergraph DesignSoftware |
| IGEBU |
Institut Geographique de Burundi |
| IGES |
Initial Graphics Exchange Specification; International GraphicsExchange System |
| IGF |
Inset Graphics Format |
| IGFCOT |
Institutul de Geodezie, Fotogrammetrie, Cartografie si OrganizareaTeritoriului (Romania) |
| IGG |
Institutul de Geologie si Geofizica (Romania) |
| IGGSP |
Instituto Geografico e Geologico de S~ao Paulo |
| IGIF |
International Geographic Information Foundation |
| IGIS |
Integrated Geographic Information System; Intelligent GIS |
| IGL |
Interactive Graphics Library |
| IGLD 85 |
International Great Lakes Datum of 1985 |
| IGM |
Instituto Geografico Militar |
| IGME |
Inst. of Geology and Mineral Exploration (Greece); Instituto Geologicoy Minero de Espa~na |
| IGMI |
Istituto Geografico Militare Italiano |
| IGN |
Institut geographique national; Instituto Geografico Nacional |
| IGNB |
Institut Geographique National (Belgium) |
| IGNC |
Institut Geographique National Congolaise |
| IGNTG |
Instituto Geografico Nacional “Tommy Guardia” (Panama) |
| IGS |
Information & Graphics Systems Inc.; International GPS Service;Idaho Geological Survey; Indiana Geological Survey; Geological Survey ofIsrael |
| IGSN71 |
International Gravity Standardization Net 1971 |
| IGT |
Integrated GPS Technologies Inc. |
| IGU |
International Geographical Union; Instituto Geografico Universitario(Dominican Republic) |
| IGUG |
Intergraph Graph Users Group |
| IGWMC |
International Ground Water Modeling Center |
| IGY |
International Geophysical Year |
| IGZa |
Institut Geographique du Zaire |
| IHA |
Instituto Hidrografico de la Armada (Chile) |
| IHAC |
Instituto Hidrografico de la Armada, Chile |
| IHB |
International Hydrographic Bureau |
| IHD |
International Hydrological Decade |
| IHGC |
International Health Geographics Conference |
| IHO |
International Hydrographic Organization |
| IHP |
International Hydrologic Program |
| IHSI |
Institut Haitien de Statistique de d’Informatique |
| IIAF |
Idaho Image Analysis Facility |
| IICT |
Instituto de Investigac~ao Cientifica Tropical (Portugal) |
| IIGS |
Initial Image Generating System |
| IIPL |
Interactive Image Processing Laboratory |
| IIS |
Internet Information Server |
| IJC |
International Joint Commission (U.S. & Canada) |
| IKU |
Institutt for Kontinentalsokkelundersokelse (Norway) |
| IL |
Illinois |
| ILC |
Interim Library Catalog |
| ILEX |
Interactive Landsat Executive (NASA software) |
| ILH |
Internationales Landkartenhaus (Stuttgart) |
| ILI |
Inst. for Land Information |
| ILIM |
Inst. for Land Information Management (University of Toronto) |
| Ill. |
Illinois |
| ILLIAC |
Illinois Institute for Advanced Computation |
| ILRIS-3D |
Intelligent Laser Range Imaging Scanner (Optech) |
| ILS |
Intelligent Library System (Lockheed Martin) |
| ILWIS |
Integrated Land and Water Information System (ITC) |
| IM |
Information management |
| IMA |
Intermap Analytic |
| IMACUAC |
Information Management and Computer Utilization AdvisoryCommittee |
| IMAG |
Information Management Advisory Group |
| IMACS |
Integrity Monitoring and Control Software (Javad PositioningSystems) |
| IMAGE |
Integrated Mapping and Geographic Encoding System |
| IMAGE 100 |
Interactive Multispectral Image Analysis System (GE) |
| IMAN |
Image Analysis (system); Intermap Analytic Nucleus |
| IMAP |
Input, Management, Analysis, and Presentation |
| IMC |
Image Motion Compensator |
| IMCoS |
International Map Collectors Society |
| IMDA |
International Map Dealers Assn. |
| .IMG |
ADRG image format (USDMA) |
| IMGW |
Instytut Meteorologii i Gospodarki Wodnej (Poland) |
| IMLS |
Institute of Museum and Library Services (US) |
| IMO |
International Maritime Organization |
| IMP |
Integrated Micro Products Inc. |
| IMPAC |
Image Analysis Computer Package (Egbert Scientific) |
| IMS |
Intermediate map scale; Image Manipulation System; Internet Map Server(ESRI) |
| IMSI |
International Microcomputer Software, Inc. |
| IMT |
Information Management Technologies (Firm); Internet Media Type |
| IMTA |
International Map Trade Assn. |
| IMW |
International Map of the World |
| in. |
Inch; inches |
| IN |
Indiana |
| INC |
Institut National de Cartographie |
| INCG |
Institut National de Cartographie du Gabon; Institut GeographiqueNational Guineen |
| Ind. |
Indiana |
| INDEC |
Instituto Nacional de Estadistica y Censos (Argentina) |
| INE |
Instituto Nacional de Estadistica (Ecuador, Guatemala) |
| INEAC |
Institut National pour l’Etude Agronomique du Congo |
| INEGI |
Instituto Nacional de Estadisticas, Geografia e Informatica(Mexico) |
| INETER |
Instituto Nicaraguense de Estudios Territoriales |
| INFORM |
Information Network for Operational Resources Management(Arizona) |
| INGEMMET |
Instituto Geologico Minero y Metalurgico (Peru) |
| INGEO- MINAS |
Instituto Nacional de Investigaciones Geologico-Mineras(Colombia) |
| INGM |
Instituto Nacional de Geologia |
| INLT |
Inlet |
| INMARSAT |
International Maritime Satellite (organization) |
| INMG |
Instituto Nacional de Meteorologia e Geofisica (Portugal) |
| INMH |
Instituto Nacional de Meteorologia y Hidrologia (Ecuador) |
| INPE |
Instituto das Pesquisas Espaciais (Brazil) |
| INQUA |
International Union for Quaternary Research |
| INRA |
Institut National de Recherche Agronomique (France) |
| INRAT |
Institut National de la Recherche Agronomique de Tunisie |
| INS |
Inertial Navigation System |
| InSAR |
Interferometric Synthetic Aperture Radar |
| INSEE |
Institut National de la Statistique et des Etudes Economiques(France) |
| INSIDE |
Interactive Numeric Spatial Information Data Engine (Univ. ofIdaho) |
| INSMAP |
International Symposium on Marine Positioning |
| Inst. |
Institute |
| INSTAAR |
Inst. of Arctic and Alpine Research (Univ. of Colorado) |
| INTA |
Instituto Nacional de Tecnologia Agropecuaria (Argentina) |
| INTELSAT |
International Telecommunications Satellite (organization) |
| INTRISCA |
Integrated Resource Inventory for South-Central Alaska |
| INUPAL |
Informaciones Unidas para America Latina (Chile) |
| IO |
Input/output; Interior orientation |
| I/O |
Input/output |
| IOC |
Intergovernmental Oceanographic Commission; Initial operationalcapability |
| ION |
Institute of Navigation |
| IOP |
International Organisation of Palaeobotany |
| IOS |
Institute of Oceanographic Science (Great Britain) |
| IP |
Internet protocol; Image point |
| IPA |
Imagery Product Archive (USDMA) |
| IPAM |
Instituto de Pesquisa Ambiental da Amazonia |
| IPCS |
Image Production Control System |
| IPE |
Image processing engine |
| IPF |
Image Processing Facility (GSFC) |
| IPGP |
Institut de Physique du Globe de Paris |
| IPRG |
Inst. for Petroleum Resources and Geophysics (Israel) |
| IPLSA |
Illinois Professional Land Surveyors Assn. |
| IPOSTEL |
Instituto Postal Telegrafico (Venezuela) |
| IPP |
Integrated Plotting Package |
| IPS |
Image processing system; Inertial Positioning System |
| IPT |
Informatica per il Territorio; Instituto de Pesquisas Tecnologicas(Sao Paulo, Brazil); Integrated Product Team |
| IPX |
Internet Packet Exchange |
| IR |
Imaging Radiometer; Infrared |
| IRAT |
Institut de Recherches en Agronomie Tropicale (France) |
| IRC |
Intergraph Registered Consultant |
| IR. CH. |
Iron chimney |
| IR. CH.S.A. |
Iron chimney with spark arrestor |
| IRD |
Information Resources Division (Arizona) |
| IRDB |
Integrated regional database |
| IRDS |
Information Resource Dictionary System |
| IRF |
Internal Raster File; Internal Raster Format |
| IRG |
Inter-Record Gap |
| IRICC |
Interagency Resource Information Coordination Council |
| IRIS |
Infrared Interferometer/Spectrometer; Interim Research andIntelligence Service (U.S. Dept. of State); Incorporated ResearchInstitutions for Seismology |
| IRIS R&A |
Research and Analysis Branch, Interim Research and IntelligenceService (U.S. Dept. of State) |
| IRLSA |
Illinois Registered Land Surveyors Assn. |
| IRRI |
International Rice Research Inst. |
| IRS |
Internal Revenue Service (U.S.); Information retrieval system; IndianRemote Sensing (Satellite) |
| IRSA |
Inst. of Remote Sensing Applications |
| IRWA |
International Right of Way Assn. |
| IRWD |
Irvine Ranch Water District |
| Is. |
Island |
| IS |
International Standard |
| I.S. |
John Speed |
| ISA |
Institute of Surveyors of Australia; Internet StarterApplications |
| ISABU |
Institut des Sciences Agronomiques au Burundi |
| ISAMS |
Improved Stratospheric and Mesospheric Sounder |
| ISAPI |
Internet Server Application Programming Interface |
| ISBD(CM) |
International Standard Bibliographic Description for CartographicMaterials |
| ISBD(ER) |
International Standard Bibliographic Description for ElectronicResources |
| ISC |
Information Systems Council |
| ISCEM |
International Society of Curators of Early Maps |
| ISD |
Information Services Div. |
| ISDN |
Integrated Services Digital Network |
| ISEA |
Icosahedral Snyder equal area (projection) |
| ISERT |
Institut Superieur pour les Etudes et Recherches Scientifique etTechniques (Djibouti) |
| ISGS |
Illinois State Geological Survey |
| ISI |
Image Subsystem Interface; Information Systems Inventory (EPA);Interpretation System, Inc. |
| I-SITE |
Intelligent Screening of Imagery for Teleophthalmology |
| Isl. |
Island |
| ISL |
Island |
| ISLP |
Land-tied island |
| ISLS |
Islands |
| ISM |
Interpretive Structural Modeling |
| ISMS |
International Society for Mine Surveying |
| ISO |
Imaging Spectrometer Observatory; International StandardsOrganization |
| ISP |
Internet service provider |
| ISPI |
Intermediate-scale Product Inventory |
| ISPLS |
Indiana Society of Professional Land Surveyors |
| ISPRS |
International Society for Photogrammetry and Remote Sensing |
| ISR |
Information Storage and Retrieval |
| IS&T |
Information Systems and Technology |
| ISTAT |
Istituto Centrale di Statistica (Italy) |
| ISTD |
Inter-Services Topographical Dept. (Great Britain) |
| ISTH |
Isthmus |
| ISU |
International System of Units |
| ISURL |
Indiana State Univ. Remote Sensing Laboratory |
| IT |
Information technology; Integration Technologies Inc. |
| I.T. |
Idaho Territory |
| ITA |
Intelligent Traverse Adjustment |
| ITAA |
Information Technology Assn. of America |
| ITC |
International Inst. for Aerospace Survey and Earth Sciences(Netherlands; formerly International Training Centre for Aerial Survey);International Trade Commission |
| ITCA |
International Topographic Composition Assn. |
| ITD |
Interim Terrain Data |
| ITE |
Institute of Terrestrial Ecology (Great Britain) |
| ITF |
INTERLIS Transfer Format |
| ITFE |
Inductive terrain feature extraction |
| ITRF |
International Terrestrial Reference Frame |
| ITRF00 |
International Terrestrial Reference Frame of 2000 |
| ITRM |
Information Technology Resouces Management (standard, Virginia) |
| ITRS |
International Terrestrial Reference System |
| ITS |
Intelligent transportation system |
| ITSA |
Independent Travel Stores Assn. |
| ITU |
Image Transfer Unit; International Telecommunications Union |
| IUE |
International Ultraviolet Explorer |
| IUGG |
International Union of Geodesy and Geophysics |
| IUGS |
International Union of Geological Sciences |
| IUSM |
International Union for Surveying and Mapping |
| IVHS |
Intelligent Vehicle Highway Systems |
| IW |
Information Warfare |
| IWARDS |
Iowa Water Resources Data System |
| IWIS |
International Water Information System |
| IWPC |
Inst. of Water Pollution Control |
| IWRA |
International Water Resources Assn. |
| I2S |
International Imaging Systems Inc. |
