itma_polygon

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Alaska Dept. of Natural Resources, Land Records Info. Section

Publication_Date: 1993

Title: itma_polygon

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: GRIDS

Issue_Identification: itma

Publication_Information:

Publication_Place: Anchorage, AK

Publisher: ADNR, LRIS

Online_Linkage: \\BERGESON\E$\AquaTerra2\New_alaska_WRD\AK_basedata.mdb

Description:

Abstract:

This coverage was generated from an ascii file containing latitude-longitude coordinates for all the corner tics for the USGS protracted 1:63,360 quadrangle sheets covering Alaska. The coverages contains both the 1:63,360 quadrangle boundaries along with the tic locations of the quadrangle corners. Each tic-id is equal to its longitude and latitud in degrees and mintues. Seconds are not included to the tic-id (due to limited number of digits allow for tic-ids), but were used to position the tics on each quad corner. There are negative tic-ids for all the 1:63,360 quads west of the 180° degrees, i.e. Attu, Kiska, and the Rat Islands.

The source for the corner coordinates was provided by the Bureau of Land Management (BLM) AEH files. DNR computer programs were used to convert the corner locations into ARC/INFO coverages. The unique tic numbering system, which is tied to each corner, allows for the future development of statewide digital libraries using these boundaries as reference tiles.

Purpose: Identifying the corners of the 1:63,360 Quadrangle Boundaries.

Supplemental_Information:

Revisions: 9/95 & 10/95 - Modification by R. Van Pelt to: 1) Alter QMQA item in .AAT to BOUND - 5 - 5 - C and CALCULATE values to equal ITM - QMQ - or FRAME. 2) To correct the south boundary of the KENAI quadrangle at KENQ8. This boundary was skewed 245.409 meters north on the west and 361.704 meters south on the east. The arc was repositioned by:

BUILDing for NODE in ARC; in AE SELecting each NODE to determine location and MOVE NODE to correct X - Y coordinate; BUILD in ARC; DROPFEATURES NODE. 3) In INFO ALTERed the ITMA.TIC IDTIC OUTPUT WIDTH to 10 so the IDTIC displays.

12/95 - Modification by R. Van Pelt to: 1) DROPITEM LOCATION from .PAT; item is not needed: DROPITEM ITMA.PAT ITMA.PAT LOCATION

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1993

Currentness_Reference: unknown

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -179.989280

East_Bounding_Coordinate: 179.990440

North_Bounding_Coordinate: 74.335210

South_Bounding_Coordinate: 45.521284

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: ITM

Theme_Keyword: topographic

Theme_Keyword: USGS topographic boundaries

Theme_Keyword: inch to the mile

Theme_Keyword: 1:63,360

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Alaska

Access_Constraints:

To ensure distribution of the most current public information, please refer requests for data or products to the Alaska Department of Natural Resources, Land Records Information Section.

Use_Constraints:

Appropriate scale of use in not applicable. Arcs were generated from exact latitude/longitude.

Any hardcopies or published datasets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the Alaska Department of Natural Resources.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GIS Public Access Coordinator

Contact_Organization:

AK Department of Natural Resources - Land Records Information Section

Contact_Position: GIS Public Access Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 550 W. 7th Suite 706

City: Anchorage

State_or_Province: AK

Postal_Code: 99501

Country: USA

Contact_Voice_Telephone: 907/269-8833

Contact_Facsimile_Telephone: 907/269-8920

Contact_Electronic_Mail_Address: GIS_Public_Access@dnr.state.ak.us

Hours_of_Service: 800-1600 AST

Contact_Instructions: See Distribution_Information

Data_Set_Credit: BLM for their AEH files contribution.

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Unknown

Logical_Consistency_Report: Polygon and chain-node topology present.

Completeness_Report:

All 153 1:250000 quads were plotted- showing tics- tic ids and quad boundaries. Checked for missing tics from quad corners- and verified against USGS maps questionable tics and quad boundaries.

Since these tics and quad boundaries were edited with the creation of the itm and qmq libraries in mind- itm boundaries were changed to included all land located outside itm quad boundaries. Land is included in the same itm quad that USGS included it in- including islands etc- even if they cross qmq boundaries. In some cases this has affected the placement of the qmq boundaries (since one arc can represent both a qmq and an itm boundary). To get qmq boundaries which match the USGS quads use the qmqa coverage.

Some tics were found to be incorrect including missing tics and extraneous tics. These were corrected by projecting the lat/longs from the USGS maps into Albers and adding them to the cover.

Each tic id contains the longitude/latitude for its location in degrees & minutes. For example tic id 157405615 has a longitude of 157 degrees and 40 minutes and a latitude of 56 degrees and 15 minutes. Seconds are not included in tic id but the complete longitude/latitude including seconds was used to position the tics. Negative tic ids were used for the quads of ATTU KISKA and RAT ISLANDS because these islands are located west of 180 degrees longitude.

This coverage includes an outside polygon for the purpose of setting up the library in order to include some areas which fall outside the USGS qmq boundaries. This is in case we ever need to add new tiles to map anything off the coast which would not be covered by USGS quads.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: Unknown

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Bureau of Land Management

Publication_Date: 1992

Title: AEH files

Source_Scale_Denominator: 2

Type_of_Source_Media: magnetic tape

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1992

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: none

Source_Contribution: base for generating quadrangles

Process_Step:

Process_Description: converted ascii file to tic coverage.

Process_Date: 1993

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: E:\AquaTerra2\New_alaska_WRD\itma.xml

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 3011

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 6705

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 3012

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 55.000000

Standard_Parallel: 65.000000

Longitude_of_Central_Meridian: -154.000000

Latitude_of_Projection_Origin: 50.000000

False_Easting: 0.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.031648

Ordinate_Resolution: 0.031648

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_Clarke_1866

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.400000

Denominator_of_Flattening_Ratio: 294.978698

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Resolution: 0.000010

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: itma_polygon

Entity_Type_Definition: arc attributes

Entity_Type_Definition_Source: ARC/INFO

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ITM or QMQ

Enumerated_Domain_Value_Definition: 1:63,360 or 1:250,000 quad

Enumerated_Domain_Value_Definition_Source: USGS?

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute:

Attribute_Label: PERIMETER

Attribute:

Attribute_Label: ITMA_

Attribute:

Attribute_Label: ITMA_ID

Attribute:

Attribute_Label: NAME

Attribute:

Attribute_Label: QUADNO

Attribute:

Attribute_Label: TILE_NAME

Attribute:

Attribute_Label: QUAD250

Attribute:

Attribute_Label: QUAD63

Attribute:

Attribute_Label: SHORT_NAME

Attribute:

Attribute_Label: Shape_Length

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: Shape_Area

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Detailed_Description:

Entity_Type:

Entity_Type_Label: ITMA.PAT

Entity_Type_Definition: polygon attributes

Entity_Type_Definition_Source: ARC/INFO

Attribute:

Attribute_Label: NAME

Attribute_Definition: full name of itm quad (or qmq if outside itm boundaries)

Attribute_Definition_Source: unknown

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: full 1:63,360 topo quad name

Enumerated_Domain_Value_Definition: full 1:63,360 topo quad name

Enumerated_Domain_Value_Definition_Source: USGS?

Attribute:

Attribute_Label: QUADNO

Attribute_Definition: Abbreviated code representing 1:250,000 quads

Attribute_Definition_Source: unknown

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 153

Overview_Description:

Entity_and_Attribute_Overview:

QUADNO/ NAME (listing only the QMQ name) 1 BARROW 2 WAINWRIGHT 3 MEADE RIVER 4 TESHEKPUK 5 HARRISON BAY 6 BEECHEY POINT 7 FLAXMAN ISLAND 8 BARTER ISLAND 9 POINT LAY 10 UTUKOK RIVER 11 LOOKOUT RIDGE 12 IKPIKPUK RIVER 13 UMIAT 14 SAGAVANIRKTOK 15 MT MICHELSON 16 DEMARCATION POINT 17 POINT HOPE 18 DE LONG MTS 19 MISHEGUK MTN 20 HOWARD PASS 21 KILLIK RIVER 22 CHANDLER LAKE 23 PHILIP SMITH MTS 24 ARCTIC 25 TABLE MTN 26 NOATAK 27 BAIRD MTS 28 AMBLER RIVER 29 SURVEY PASS 30 WISEMAN 31 CHANDALAR 32 CHRISTIAN 33 COLEEN 34 SHISHMAREF 35 KOTZEBUE 36 SELAWIK 37 SHUNGNAK 38 HUGHES 39 BETTLES 40 BEAVER 41 FORT YUKON 42 BLACK RIVER 43 TELLER 44 BENDELEBEN 45 CANDLE 46 KATEEL RIVER 47 MELOZITNA 48 TANANA 49 LIVENGOOD 50 CIRCLE 51 CHARLEY RIVER 52 NOME 53 SOLOMON 54 NORTON BAY 55 NULATO 56 RUBY 57 KANTISHNA RIVER 58 FAIRBANKS 59 BIG DELTA 60 EAGLE 61 ST LAWRENCE 62 ST MICHAEL 63 UNALAKLEET 64 OPHIR 65 MEDFRA 66 MT MC KINLEY 67 HEALY 68 MT HAYES 69 TANACROSS 70 BLACK 71 KWIGUK 72 HOLY CROSS 73 IDITAROD 74 MC GRATH 75 TALKEETNA 76 TALKEETNA MTS 77 GULKANA 78 NABESNA 79 HOOPER BAY 80 MARSHALL 81 RUSSIAN MISSION 82 SLEETMUTE 83 LIME HILLS 84 TYONEK 85 ANCHORAGE 86 VALDEZ 87 MC CARTHY 88 ST MATTHEW 89 NUNIVAK ISLAND 90 BAIRD INLET 91 BETHEL 92 TAYLOR MTS 93 LAKE CLARK 94 KENAI 95 SEWARD 96 CORDOVA 97 BERING GLACIER 98 MT ST ELIAS 99 CAPE MENDENHALL 100 KUSKOKWIM BAY 101 GOODNEWS BAY 102 DILLINGHAM 103 ILIAMNA 104 SELDOVIA 105 BLYING SOUND 106 MIDDLETON ISLAND 107 ICY BAY 108 YAKUTAT 109 SKAGWAY 110 ATLIN 111 HAGEMEISTER ISLAND 112 NUSHAGAK BAY 113 NAKNEK 114 MT KATMAI 115 AFOGNAK 116 MT FAIRWEATHER 117 JUNEAU 118 TAKU RIVER 119 BRISTOL BAY 120 UGASHIK 121 KARLUK 122 KODIAK 123 SITKA 124 SUMDUM 125 PRIBILOF ISLANDS 126 CHIGNIK 127 SUTWIK ISLAND 128 TRINITY ISLANDS 129 KAGUYAK 130 PORT ALEXANDER 131 PETERSBURG 132 BRADFIELD CANAL 133 COLD BAY 134 PORT MOLLER 135 STEPOVAK BAY 136 CRAIG 137 KETCHIKAN 138 UNIMAK 139 FALSE PASS 140 SIMEONOF ISLAND 141 DIXON ENTRANCE 142 PRINCE RUPERT 143 UMNAK 144 UNALASKA 145 ATTU 146 AMUKTA 147 SAMALGA ISLAND 148 KISKA 149 RAT ISLAND 150 GARELOI ISLAND 151 ADAK 152 ATKA 153 SEGUAM

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

AK Department of Natural Resources - Land Records Information Section

Contact_Position: GIS Public Access Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 550 W. 7th Suite 706

City: Anchorage

State_or_Province: AK

Postal_Code: 99501

Country: USA

Contact_Voice_Telephone: 907/269-8833

Contact_Facsimile_Telephone: 907/269-8920

Contact_Electronic_Mail_Address: GIS_Public_Access@dnr.state.ak.us

Hours_of_Service: 800-1600 AST

Contact_Instructions:

For Grids CD - email completed "Request for DNR GIS Data" form. Form can be found at

Resource_Description: Downloadable Data

Metadata_Reference_Information:

Metadata_Date: 20040406

Metadata_Review_Date: 19990513

Metadata_Future_Review_Date: 20000101

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: ADNR, LRIS, GIS Unit

Contact_Person: Dorothy Mortenson

Contact_Position: GIS Manager

Contact_Address:

Address_Type: mailing and physical address

Address: 550 W. 7th Suite 706

City: Anchorage

State_or_Province: AK

Postal_Code: 99501

Country: USA

Contact_Voice_Telephone: 907/269-8852

Contact_Facsimile_Telephone: 907/563-1597

Contact_Electronic_Mail_Address: dorothy_mortenson@dnr.state.ak.us

Hours_of_Service: 800-1600 AST

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: none

Metadata_Use_Constraints:

If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources.

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile