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Service Description: The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced an orthorectified aerial optical image mosaic (orthoimage) and digital surface model over an area extending from milepost (MP) 17 to approximately MP 24.5 on the Alaska State Highway 7 (Haines Highway) north of Haines along the Chilkat River in southeast Alaska. The aerial photogrammetric survey targeted large debris fans and their alpine source areas on the west side of the Takshanuk Mountains in support of cryosphere hazards mapping and monitoring efforts. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on May 26, 2014, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the orthoimagery. For the purpose of enabling open access to geospatial datasets in Alaska, this collection is being released as a Raw Data File with an open end-user license. The data files available for download are tiled GeoTIFFs. All data are projected in UTM Zone 8 North (meters) using the NAD83 (2011; EPSG 6337) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum. The orthoimage is a three-band, 8-bit unsigned GeoTIFF file using LZW compression. The orthoimage has a GSD of 0.21 m per pixel, and the "No Data" value is set to 0. Variable lighting in the orthoimages may result from variable sky conditions during the time of data acquisition.
Name: elevation/haines_hwy_debris_flows_2014_05_26_ortho_rgb
Description: The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced an orthorectified aerial optical image mosaic (orthoimage) and digital surface model over an area extending from milepost (MP) 17 to approximately MP 24.5 on the Alaska State Highway 7 (Haines Highway) north of Haines along the Chilkat River in southeast Alaska. The aerial photogrammetric survey targeted large debris fans and their alpine source areas on the west side of the Takshanuk Mountains in support of cryosphere hazards mapping and monitoring efforts. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on May 26, 2014, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the orthoimagery. For the purpose of enabling open access to geospatial datasets in Alaska, this collection is being released as a Raw Data File with an open end-user license. The data files available for download are tiled GeoTIFFs. All data are projected in UTM Zone 8 North (meters) using the NAD83 (2011; EPSG 6337) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum. The orthoimage is a three-band, 8-bit unsigned GeoTIFF file using LZW compression. The orthoimage has a GSD of 0.21 m per pixel, and the "No Data" value is set to 0. Variable lighting in the orthoimages may result from variable sky conditions during the time of data acquisition.
Single Fused Map Cache: false
Extent:
XMin: 445382.9723561461
YMin: 6578568.704218194
XMax: 457542.3923561457
YMax: 6591004.694218193
Spatial Reference: 102055
(6337)
Initial Extent:
XMin: 445382.9723561461
YMin: 6578568.704218194
XMax: 457542.3923561457
YMax: 6591004.694218193
Spatial Reference: 102055
(6337)
Full Extent:
XMin: 445382.9723561461
YMin: 6578568.704218194
XMax: 457542.3923561457
YMax: 6591004.694218193
Spatial Reference: 102055
(6337)
Pixel Size X: 0.2099999999999937
Pixel Size Y: 0.20999999999998806
Band Count: 4
Pixel Type: U8
RasterFunction Infos: {"rasterFunctionInfos": [{
"name": "None",
"description": "A No-Op Function.",
"help": ""
}]}
Mensuration Capabilities: None
Has Histograms: true
Has Colormap: false
Has Multi Dimensions : false
Rendering Rule:
Min Scale: 0
Max Scale: 0
Copyright Text: This project is funded by the State of Alaska Department of Transportation & Public Facilities and a State of Alaska Capital Improvement Project.
Service Data Type: esriImageServiceDataTypeGeneric
Min Values: 0, 0, 0, 0
Max Values: 247, 247, 246, 255
Mean Values: 75.92442063561761, 83.34767912726988, 76.09574270854678, 207.9276719065601
Standard Deviation Values: 45.37469524031525, 47.02708454459809, 45.45369598156036, 98.66395999032405
Object ID Field: OBJECTID
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID
)
-
Shape
(
type: esriFieldTypeGeometry, alias: Shape
)
-
Name
(
type: esriFieldTypeString, alias: Name, length: 200
)
-
MinPS
(
type: esriFieldTypeDouble, alias: MinPS
)
-
MaxPS
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type: esriFieldTypeDouble, alias: MaxPS
)
-
LowPS
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type: esriFieldTypeDouble, alias: LowPS
)
-
HighPS
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type: esriFieldTypeDouble, alias: HighPS
)
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Category
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type: esriFieldTypeInteger, alias: Category
,
Coded Values:
[0: Unknown]
,
[1: Primary]
,
[2: Overview]
, ...5 more...
)
-
Tag
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type: esriFieldTypeString, alias: Tag, length: 100
)
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GroupName
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type: esriFieldTypeString, alias: GroupName, length: 100
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ProductName
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type: esriFieldTypeString, alias: ProductName, length: 100
)
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CenterX
(
type: esriFieldTypeDouble, alias: CenterX
)
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CenterY
(
type: esriFieldTypeDouble, alias: CenterY
)
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ZOrder
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type: esriFieldTypeInteger, alias: ZOrder
)
-
Shape_Length
(
type: esriFieldTypeDouble, alias: Shape_Length
)
-
Shape_Area
(
type: esriFieldTypeDouble, alias: Shape_Area
)
Default Mosaic Method: Northwest
Allowed Mosaic Methods: NorthWest,Center,LockRaster,ByAttribute,Nadir,Viewpoint,Seamline,None
SortField:
SortValue: null
Mosaic Operator: First
Default Compression Quality: 75
Default Resampling Method: Bilinear
Max Record Count: 1000
Max Image Height: 4100
Max Image Width: 15000
Max Download Image Count: 20
Max Mosaic Image Count: 20
Allow Raster Function: true
Allow Copy: true
Allow Analysis: true
Allow Compute TiePoints: false
Supports Statistics: true
Supports Advanced Queries: true
Use StandardizedQueries: true
Raster Type Infos:
Name: Raster Dataset
Description: Supports all ArcGIS Raster Datasets
Help:
Has Raster Attribute Table: false
Edit Fields Info: null
Ownership Based AccessControl For Rasters: null
Child Resources:
Info
Histograms
Statistics
Key Properties
Legend
Raster Function Infos
Supported Operations:
Export Image
Query
Identify
Compute Histograms
Compute Statistics Histograms
Get Samples
Compute Class Statistics
Query Boundary
Compute Pixel Location
Compute Angles
Validate
Project