CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 284 FILE_RECORDS = 592 ^TABLE = "GEO.TAB" TARGET_NAME = VENUS MISSION_NAME = MAGELLAN DESCRIPTION = "This table contains the location and geological type of all Venus features defined by the International Astronomical Union (IAU) prior to January 1, 1990." OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 592 COLUMNS = 8 OBJECT = COLUMN NAME = MINIMUM_LATITUDE DATA_TYPE = REAL UNIT = DEGREE START_BYTE = 1 BYTES = 8 DESCRIPTION = "The minimum_latitude element specifies the southernmost latitude of the feature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAXIMUM_LATITUDE DATA_TYPE = REAL UNIT = DEGREE START_BYTE = 10 BYTES = 8 DESCRIPTION = "The maximum_latitude element specifies the northernmost latitude of the feature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MINIMUM_LONGITUDE DATA_TYPE = REAL UNIT = DEGREE START_BYTE = 19 BYTES = 8 DESCRIPTION = "The minimum_longitude element specifies the westernmost (left_most) longitude of the feature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAXIMUM_LONGITUDE DATA_TYPE = REAL UNIT = DEGREE START_BYTE = 28 BYTES = 8 DESCRIPTION = "The maximum_longitude element specifies the easternmost (right_most) longitude of the feature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FEATURE_TYPE DATA_TYPE = CHARACTER UNIT = 'N/A' START_BYTE = 38 BYTES = 55 DESCRIPTION = "Official IAU designation for type of feature. Examples are: ARACHNOID FLOW PLANUM (PLANA) CALDERA FOSSA (FOSSAE) REGIO (REGIONES) CHASMA (CHASMATA) LINEA RUPES COLLIS (COLLES) LINEAMENT TERRA (TERRAE) CORONA (CORONAE) MONS (MONTES) TESSERA (TESSERAE) CRATER OVOID THOLUS (THOLI) DOME PATERA (PATERAE) DORSUM (DORSA) PLANITIA (PLANITIAE) " END_OBJECT = COLUMN OBJECT = COLUMN NAME = SEARCH_FEATURE_NAME DATA_TYPE = CHARACTER UNIT = 'N/A' START_BYTE = 96 BYTES = 80 DESCRIPTION = "The geographical feature name with all diacritical marks and punctuation stripped off. This name uses only uppercase ASCII alphabetic characters and can be used for sorting and searching since it is unique within this table. When printing the name, the diacritic_feature_name should be used instead." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DIACRITIC_FEATURE_NAME DATA_TYPE = CHARACTER UNIT = 'N/A' START_BYTE = 179 BYTES = 80 DESCRIPTION = "The geographical feature name containing standard diacritical information. Contains upper and lower case letters. The name with the diacritical marks should be used when printing the feature name. DIACRITICALS USED IN THE TABLE The word diacritic comes from a Greek word meaning to separate. It refers to the accent marks employed to separate, or distinguish, one form of pronunciation of a vowel or consonant from another. This note is included to familiarize the user with the codes used to represent diacriticals found in the table, and the values usually associated with them. In the table, the code for a diacritical is preceded by a backslash and is followed, without a space, by the letter it is modifying. This note is organized as follows: the code is listed first, followed by the name of the accent mark, if applicable, a brief description of the appearance of the diacritical and a short narrative on its usage. \% acute accent; a straight diagonal line extending from upper right to lower left. The acute accent is used in most languages to lengthen a vowel; in some, such as Oscan, to denote an open vowel. The acute is also often used to indicate the stressed syllable; in some transcriptions it indicates a palatalized consonant. \: diaeresis or umlaut; two dots surmounting the letter. In Romance languages and English, the diaeresis is used to indicate that consecutive vowels do not form a dipthong (see below); in modern German and Scandinavian languages, it denotes palatalization of vowels. \^ circumflex; a chevron or inverted 'v' shape, with the apex at the top. Used most often in modern languages to indicate lengthening of a vowel. \~ tilde; a curving or waving line above the letter. The tilde is a form of circumflex. The tilde is used most often in Spanish to form a palatalized n as in the word 'ano', pronounced 'anyo'. It is also used occasionally to indicate nasalized vowels. \- macron; a straight line above the letter. The macron is used almost universally to lengthen a vowel. \u breve; a concave semicircle or 'u' shape surmounting the letter. Originally used in Greek, the breve indicates a short vowel. \o a small circle or 'o' above the letter. Frequently used in Scandinavian languages to indicate a broad 'o'. \ae dipthong or ligature; transcribed as two letters in contact with each other. The dipthong is a combination of vowels that are pronounced together. \, cedilla; a curved line surmounted by a vertical line, placed at the bottom of the letter. The cedilla is used in Spanish and French to denote a dental, or soft, 'c'. In the new Turkish transcription, 'c' cedilla has the value of English 'ch'. In Semitic languages, the cedilla under a consonant indicates that it is emphatic. \v check or inverted circumflex; a 'v' shape above the letter. This accent is used widely in Slavic languages to indicate a palatal articulation, like the consonant sounds in the English words chapter and shoe and the 'zh' sound in pleasure. \. a single dot above the letter. This diacritical denotes various things; in Lithuanian, it indicates a close long vowel. In Sanskrit, when used with 'n', it is a velar sound, as in the English 'sink'; in Irish orthography, it indicates a fricative consonant (see below). \' accent grave; a diagonal line (above the letter) extending from upper left to lower right. The grave accent is used in French, Spanish and Italian to denote open vowels. \_ fricative; a horizontal line through a consonant. A fricative consonant is characterized by a frictional rustling of the breath as it is emitted. Sources: Webster's New Collegiate Dictionary, G.& C. Merriam Co. Springfield, Mass., and Collier's Encyclopedia, P.F. Collier, Inc., London and New York " END_OBJECT = COLUMN OBJECT = COLUMN NAME = FEATURE_STATUS_TYPE DATA_TYPE = CHARACTER UNIT = 'N/A' START_BYTE = 262 BYTES = 20 DESCRIPTION = "The IAU approval status of the named feature. Permitted values are 'PROPOSED', 'PROVISIONAL', 'IAU-APPROVED', and 'DROPPED'. DROPPED names have been disallowed by the IAU, but are included in this table since they may still be found on some maps. PROPOSED names have not yet been approved by the IAU, and they may subsequently be dropped, so they should not be used on maps until they become PROVISIONAL or IAU-APPROVED." END_OBJECT = COLUMN END_OBJECT = TABLE END