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Service Description: The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial optical image mosaic (orthoimagery) of the Resurrection Bay watershed, surrounding the city of Seward in south-central Alaska. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on August 13, 2015, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. All data are projected in UTM Zone 6 North (meters) using the NAD83 (2011; EPSG 26906) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum. The project was part of an ongoing investigation of the impact of flooding, slope instability, and cryosphere hazards on infrastructure and public safety. 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. All files can be downloaded free of charge from the DGGS website (http://doi.org/10.14509/29824). The orthoimage is a three-band, 8-bit unsigned GeoTIFF file using LZW compression. The orthoimage has a GSD of 0.2 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/resurrection_bay_2015_08_13_ortho_rgb
Description: The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial optical image mosaic (orthoimagery) of the Resurrection Bay watershed, surrounding the city of Seward in south-central Alaska. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on August 13, 2015, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. All data are projected in UTM Zone 6 North (meters) using the NAD83 (2011; EPSG 26906) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum. The project was part of an ongoing investigation of the impact of flooding, slope instability, and cryosphere hazards on infrastructure and public safety. 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. All files can be downloaded free of charge from the DGGS website (http://doi.org/10.14509/29824). The orthoimage is a three-band, 8-bit unsigned GeoTIFF file using LZW compression. The orthoimage has a GSD of 0.2 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: 356398.36638141825
YMin: 6651089.596062115
XMax: 377657.9997077695
YMax: 6679154.216565939
Spatial Reference: 26906
(26906)
Initial Extent:
XMin: 356398.36638141825
YMin: 6651089.596062115
XMax: 377657.9997077695
YMax: 6679154.216565939
Spatial Reference: 26906
(26906)
Full Extent:
XMin: 356398.36638141825
YMin: 6651089.596062115
XMax: 377657.9997077695
YMax: 6679154.216565939
Spatial Reference: 26906
(26906)
Pixel Size X: 0.20260777019299758
Pixel Size Y: 0.20260777019299633
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 Seward Bear Creek Flood Service Area, Kenai Peninsula Borough, DGGS through a State of Alaska Capital Improvement Project, and the University of Alaska Fairbanks, Geophysical Institute.
Service Data Type: esriImageServiceDataTypeGeneric
Min Values: 0, 0, 0, 0
Max Values: 253, 252, 252, 255
Mean Values: 85.8370470096389, 95.56278340413465, 88.15344605389136, 254.8956356816159
Standard Deviation Values: 38.06341301034151, 35.233281763224895, 36.51739498002, 4.904594667295284
Object ID Field: OBJECTID
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID
)
-
Shape
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type: esriFieldTypeGeometry, alias: Shape
)
-
Name
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type: esriFieldTypeString, alias: Name, length: 200
)
-
MinPS
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type: esriFieldTypeDouble, alias: MinPS
)
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MaxPS
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type: esriFieldTypeDouble, alias: MaxPS
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LowPS
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type: esriFieldTypeDouble, alias: LowPS
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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...
)
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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
)
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Shape_Length
(
type: esriFieldTypeDouble, alias: Shape_Length
)
-
Shape_Area
(
type: esriFieldTypeDouble, alias: Shape_Area
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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