Remote Sensing and Internet Data Sources

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Remote Sensing and Internet Data Sources

• Unit 3 Module 12, Lecture 3 Remote Autonomous
  Vehicles/On-line data resources

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Subsurface vehicles and sensors

• In large water bodies, towed or autonomous
  vehicles can be used to record data over large
  areas
• Towed systems
• Remotely operated vehicles
• Autonomous vehicles
• These use a combination of remote sensors (Sonar,
  hydroacoustics) and probes (on-board sensors)

3
EPA-MED Duluth Tow-Yo

• Provided by Jack Kelly, Mid-Continent Ecology
  Division, U.S. EPA, Duluth MN

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EPA Lake Guardian with sonar and towed sensor

• Provided by Jack Kelly
• Mid-Continent Ecology Division
• U.S. EPA, Duluth MN

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Result is semi-synoptic, spatially-referenced
data to characterize Water properties
(including biology)
Bathymetry and sediment character
Typically sample at 4-5 knots, to 100 km per day

• Provided by Jack Kelly
• Mid-Continent Ecology Division
• U.S. EPA, Duluth MN

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Tow-yo shoreline sampling Tributary receiving
waters

• Provided by Jack Kelly, Mid-Continent Ecology
  Division, U.S. EPA, Duluth MN

7

• Provided by Jack Kelly, Mid-Continent Ecology
  Division
• U.S. EPA, Duluth MN

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Remotely Operated Vehicles (ROV)

• Jason II/ Medea
• Woods Hole ROV
• 2 body system
• Medea intermediate vehicle to decouple Jason
  from surface motion
• 6500 m capabilities

Mosaic of images shot from Jason showing the
variety of sampling devices Jonathan Howland WHOI
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Autonomous Underwater Vehicles

• Powered free ranging sensors
• Capable of deep water sampling, long distances,
  inclement conditions

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REMUS Remote Environmental Monitoring Units

• Woods Hole OI
• 52 inches long
• 80 lbs
• Configured to support a variety of sensors
• Salt or fresh water

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REMUS Remote Environmental Monitoring Units

• Sensors
• Acoustic Doppler Current Profiler
• Sidescan Sonar
• Fluorometer
• Bioluminescence sensor
• Plankton pump
• Video camera
• Windows XP interface

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Larger units - Univ. South Florida AUV
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Integrated Ocean Observing System
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Internet Sources of Spatial data

• http//nmviewogc.cr.usgs.gov/viewer.htm

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Land Use/Land Cover

• Many different land use data sets
• LUDA
• AVHRR
• GAP
• Landsat
• Two important attributes
• Spatial Resolution
• Classification Resolution

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AVHRR Land Cover

• AVHRR (Advanced Very High Resolution Radiometer)
• 1 km pixel resolution
• Nationwide coverage
• 2 images/day
• Good for a coarse picture of the regional
  landscape

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USGS LULC (Land Use/Land Cover)

• Based on aerial photographs
• 1970s and 1980s
• 21 cover type categories
• 40 ac minimum map unit
• Based on 1100,000 and 1250,000 USGS quadrangles
• Free

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Land Use/Land Cover Level II codes

• code "11"
• Residential
• code "12"
• Commercial and services
• code "13"
• Industrial
• code "14"
• Transportation, communications, and utilities
• code "15"
• Industrial and commercial complexes
• code "16"
• Mixed urban or built-up land
• code "17"
• Other built-up land
• code "21"
• Cropland and pasture
• code "22"
• Orchards, groves, vineyards, nurseries and
  ornamental horticultural areas
• code "23"

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National Land Cover Dataset (NCLD)

• Nationwide coverage
• Derived from early-mid 1990s Landsat Thematic
  Mapper imagery
• 30 m resolution
• 21 classes (modified Anderson Level II)
• 2001 NLCD data now available

• http//landcover.usgs.gov/images/glensfalls_web.jp
  g

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Transportation and Infrastructure

• Major roads
• County roads
• Township roads
• City streets
• Railroads
• Pipelines
• Airports
• Source
• TIGER data

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Hydrography water resources

• Lakes
• Wetlands
• By wetland type
• Emergent
• Forested
• Scrub/shrub, etc
• Streams
• Rivers
• FEMA Floodplain
• Well locations
• Watershed boundaries

• Internet Map Server session for a wetland
  inventory of the Poplar River watershed, north
  shore of Lake Superior

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Census data

• Maintained by US Census Bureau
• Data available in
• Blocks
• Tracts
• Other divisions
• Summarized by
• Population
• Demographics
• Congressional districts, others

• Census tracts, St. Louis Co, MN

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Digital Elevation Models (DEMs)

• Pixel-based data describing elevations
• Typically 30 m resolution
• Used for
• Slope calculations
• Generating contours
• Watershed delineations
• Hydrologic modeling
• Flow direction
• Flow distance
• Viewshed analyses
• Hillshades

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Easy GIS accessing on-line data
Be sure to visit DuluthStreams And LakeAccess!
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Metadata data about data

• Important to understand where your data came from
  metadata

Identification_Information Citation
Citation_Information Originator NOAA
Coastal Services Center Publication_Date
19971131 Title Hurricane Storm Surge
Geospatial_Data_Presentation_Form Map
Publication_Information
Publication_Place Charleston, SC
Publisher NOAA Coastal Services Center
Larger_Work_Citation Citation_Information