Georeferenced Master Title Plats of Alaska

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Bureau of Land Management- Alaska State Office, Branch of Mapping Sciences, Land Information Section
Publication_Date: Unknown
Title: Georeferenced Master Title Plats of Alaska
Geospatial_Data_Presentation_Form: atlas
Other_Citation_Details:
Case filles, United States Surveys (US Surveys), Rectangular Surveys, Mineral Surveys, 14(c) surveys
Description:
Abstract:
This dataset originated as Master Title Plats. The drawings were either scanned, or converted to a tiff image. The tiff images were georeferenced and clipped to the township boundary. The images are in an Albers Projection. This data set is missing approximately 400 township; in other words, there are 400 townships that have NOT been georeferenced and clipped. The missing townships are currently being processed.
Purpose:
To provide a data set that can be combined in a seamless manner to support the Bureau of Land Management?s Conveyance program, land and resource management projects; wildfire, suppression/monitoring efforts, and to provide additional land information products to the public.
Supplemental_Information: For further information contact Greg Balen
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000101
Ending_Date: Present
Currentness_Reference: publication date
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -180
East_Bounding_Coordinate: 180
North_Bounding_Coordinate: 71.4
South_Bounding_Coordinate: 51.2
Keywords:
Theme:
Theme_Keyword_Thesaurus: BLM-THEME
Theme_Keyword: Master Title Plat
Theme_Keyword: MTP
Theme_Keyword: Land Use Planning
Theme_Keyword: Lands
Theme_Keyword: Native
Theme_Keyword: Allotment
Place:
Place_Keyword_Thesaurus: BLM-State
Place_Keyword: Alaska
Access_Constraints:
This data set is in the public domain, and the recipient may not assert any proprietary rights thereto nor represent it to anyone as other than Bureau of Land Management's data set.
Use_Constraints:
This data is not survey quality and is not intended for measurement use.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Greg Balen
Contact_Organization: Bureau of Land Management
Contact_Position: Section Chief of Land Information Section
Contact_Address:
Address_Type: mailing and physical address
Address: 222 W. 7th
City: Anchorage
State_or_Province: AK
Postal_Code: 99513
Country: USA
Contact_Voice_Telephone: 907-271-5537
Contact_Facsimile_Telephone: 907-271-4549
Contact_Electronic_Mail_Address: greg_balen@ak.blm.gov
Hours_of_Service: 8:00 am - 3:00pm (Alaska Standard)
Contact_Instructions: leave a message

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: UNKNOWN
Logical_Consistency_Report:
Raster image of the Master Title Plat, (MTP) that has been georeferenced. The scanned MTP is visually inspected and compared to the source MTP. The data has not been altered. The data is only as accurate as the MTP.
Completeness_Report:
Because the information noted in the MTP collar has been clipped off, some information may not be present. Users should be aware that for complete information the official Bureau record MTP should be consulted, as these geo-referenced MTP's are a specialty product.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: UNKNOWN
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: UNKNOWN
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Bureau of Land Management- Alaska State Office, Branch of Mapping Sciences, Land Information Section
Publication_Date: Unknown
Title: Georeferenced_Master_Title_Plats_of_Alaska
Geospatial_Data_Presentation_Form: atlas
Other_Citation_Details:
Case filles, United States Surveys (US Surveys), Rectangular Surveys, Mineral Surveys, 14(c) surveys
Source_Scale_Denominator: 31680
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010101
Beginning_Time: Unknown
Ending_Date: Present
Ending_Time: Unknown
Source_Currentness_Reference: on-going
Source_Citation_Abbreviation: MTP (Master Title Plat)
Source_Contribution:
The BLM township grid is the source that was used to collect the set of tics used for georeferencing the Master Title Plats (MTP's) images.
Process_Step:
Process_Description:
Master Title Plats (MTPs) are created using land ownership information contained in case files, and land description information from US Surveys, Rectangular Surveys, Mineral Surveys 14(c) surveys, and other land descriptions. They are drawn at a scale of 1:31680 (2 inches =1 mile). Supplemental plats are used to enlarge and clearly show areas of congested status and have varying scales, depending on what is being shown.
Originally, information on the MTP was hand drafted on Mylar. Currently, changes to the MTP are made in a digital format using AUTOCAD. All MTPs were scanned as a raster tiff image from either a microfilm image or the original Mylar, before being imported into AUTOCAD. Images of areas that have had no land actions since the initial scan may be of poorer visual quality, as they have not yet been vecortized in AUTOCAD. MTP images are displayed as 300 dpi tiff images. In 1999, scans of MTPs made from the microfilm at 400 dpi. After 1999 until late 2001 MTPs were scanned using a? true Scanner" at 400 dpi. In late 2001, a "Vidar" scanner was used. Some images were scanned from the original Mylar, and some were rescans of the microfilm.
Currently, when new changes are made to plats in AutoCAD, images are plotted to an internal CAL driver, that converts AUTOCAD vector data to a 300 dpi raster format tiff image. The tiff images (either from original scans or CAL driver output) were displayed in a digital format and then geo-referenced and clipped to the township boundary using ESRI ARCINFO software, with an accuracy tolerance of no more than 20 feet between identical points on the geo-referenced MTP and the Albers section grid.
The MTP data is not survey quality and is not intended for measurement use.
Source_Used_Citation_Abbreviation: MTP (Master Title Plat)
Process_Date: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Greg Balen
Contact_Organization: Bureau of Land Management
Contact_Position: Section Chief of Land Information Section
Contact_Address:
Address_Type: mailing and physical address
Address: 222 W. 7th
City: Anchorage
State_or_Province: AK
Postal_Code: 99513
Country: USA
Contact_Voice_Telephone: 907-271-5537
Contact_Facsimile_Telephone: 907-271-4549
Contact_Electronic_Mail_Address: greg_balen@ak.blm.gov
Hours_of_Service: 8:00 am - 3:00pm (Alaska Standard)
Contact_Instructions: leave a message
Cloud_Cover: 0

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55
Standard_Parallel: 65
Longitude_of_Central_Meridian: -154
Latitude_of_Projection_Origin: 50
False_Easting: 0
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate Pair
Coordinate_Representation:
Abscissa_Resolution: 2
Ordinate_Resolution: 2
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378206
Denominator_of_Flattening_Ratio: 298.2572222

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The tiff images are in black & white. All information outside the township has been removed (clipped). The tiff image is then georeferenced. The reference coordinates are located in the ".tfw" file. The images are in an Albers Equal Area Projection.
Entity_and_Attribute_Detail_Citation:
Images are listed by Meridian, Township, Range, and sometimes with their supplemental number. fairbanks_13 copper_river_12 kateel_river_44 seward_28 umiat_45 c0010n0010w000.tif
THE ABOVE IS READ: Copper River Meridian, One north, one west (The tfw file, ( the world file), is an ASCII text coordinate file that locates the tiff image on the planet) (NOT LISTED)
The extra space before the bering is for the half/partial township. If there is a partial township, that zero would become a "two." The 3 zeros before the period are for the supplementals; the first supplemental would be "001".
This standard is identical to ALIS (Alaska Land Information System).

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Greg Balen
Contact_Organization: Bureau of Land Management
Contact_Position: Section Chief of Land Information Section
Contact_Address:
Address_Type: mailing and physical address
Address: 222 W. 7th
City: Anchorage
State_or_Province: AK
Postal_Code: 99513
Country: USA
Contact_Voice_Telephone: 907-271-5537
Contact_Facsimile_Telephone: 907-271-4549
Contact_Electronic_Mail_Address: greg_balen@ak.blm.gov
Hours_of_Service: 8:00 am - 3:00pm (Alaska Standard)
Contact_Instructions: leave a message
Distribution_Liability:
No warranty expressed or implied is made by Bureau of Land Management, (BLM), reagrding the accuracy, reliability, completeness of these data, or aggregate use use with other data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Digital_Transfer_Option:
Offline_Option:
Offline_Media: not available
Recording_Format: not available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: contact Greg Balen
Access_Instructions: Contact Land Information Section Editors
Online_Computer_and_Operating_System: Currently using "WINDOWS 2000" operating system using AUTOCAD.
Fees: None
Ordering_Instructions: contact Greg Balen
Custom_Order_Process: Contact Greg Balen.

Metadata_Reference_Information:
Metadata_Date: 20021223
Metadata_Review_Date: 20040310
Metadata_Future_Review_Date: 20041231
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dave Bieganski
Contact_Organization: Bureau of Land Mangement
Contact_Position: Computer Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 222 W. 7th, Box 13
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99513
Country: USA
Contact_Voice_Telephone: 907.271.3347
Contact_Facsimile_Telephone: 907.271.4549
Contact_Electronic_Mail_Address: dave_bieganski@ak.blm.gov
Hours_of_Service: 8:00 am - 3:00pm (Alaska Standard)
Contact_Instructions: leave message
Metadata_Standard_Name: FGDC-STD-001-1998
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.9.12 on Thu Mar 09 14:08:55 2017