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Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a 1-meter ground resolution, quarter-quadrangle (3.75-minutes of latitude by 3.75-minutes of longitude) image cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum of 1983 (NAD83).The geographic extent of the DOQ is equivalent to a quarter-quad plus The overedge ranges a minimum of 50 meters to a maximum of 300 meters beyond the extremes of the primary and secondary corner points. The overedge is included to facilitate tonal matching for mosaicking and for the placement of the NAD83 and secondary datum corner ticks. The normal orientation...
Categories: Data;
Types: Downloadable;
Tags: 1-meter orthophoto,
1994,
DOQ,
DOQQ,
WY, All tags...
Wyoming,
aerial,
aerial photograph,
b and w,
black and white,
bw,
digital image map,
digital orthophoto,
digital orthophotoquad,
imageryBaseMapsEarthCover,
orthophoto,
photography,
quarter-quadrangle orthophoto,
rectified image,
rectified photograph, Fewer tags
This dataset was developed for the BLM-Rapid Ecoregional Assessment (REA) project for the Seward Peninsula - Nulato Hills - Kotzebue Sound Lowlands. This datasets represents the Change Agent, pests and disease, specifically identifiying beetle infestations. The information was collected, cooperatively by aerial surveys by both the USFS, Forest Health Protection (FHP) and ADNR, Div. of Forestry with beetle data clipped to the REA project boundary. The data represents a 10 year cumulative effect for 1989-2010.
Types: Downloadable;
Tags: Aerial,
BLM,
Bureau of Land Management,
DOI,
Damage, All tags...
Disease,
Disturbance,
Forest,
Forestry,
Geospatial,
Insect,
Pest,
REA,
Rapid Ecoregional Assessment,
SNK 2010,
Seward Peninsula,
Spruce Beetle,
Survey,
Wildlife,
biota,
cedar decline,
cummulative,
environment,
health, Fewer tags
This data represents areas of forest damage due to insect infestation, fire, flood, landslides, and windthrow. The information was collected, cooperatively by aerial surveys by both the USFS, Forest Health Protection (FHP) and ADNR, Div. of Forestry. Surveys are conducted primarily in July and August so that pest "signatures" may be identified during the optimal period for symptom development of ocular estimation. The aerial survey is coordinated such that the maximum extent of recent bark beetle damage (fading trees) and insect defoliation (discoloration, foliage loss) patterns may be determined. Surveys are flown in Southeast Alaska, Southcentral Alaska and Interior Alaska. The data represents a 10 year cumulative...
Types: Downloadable;
Tags: Aerial,
BLM,
Bureau of Land Management,
DOI,
Damage, All tags...
Disease,
Forest,
Forestry,
Geospatial,
Insect,
Pest,
REA,
Rapid Ecoregional Assessment,
SNK 2010,
Seward Peninsula,
Spruce Beetle,
Survey,
Vegetation,
biota,
cedar decline,
cummulative,
environment,
health, Fewer tags
An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation has been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map.
Categories: Data;
Types: Downloadable;
Tags: 2001,
CIR,
Color IR,
WY,
Wyoming, All tags...
aerial,
color infra-red,
geotiff,
image map,
imagery,
imageryBaseMapsEarthCover,
orthoimage,
orthophoto,
photography,
rectified photograph,
tif, Fewer tags
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