Details and Metadata

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Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Past Methods (No longer in use)

  • Aerial surveys
    Started: 1985-07-01
    Ended: 2000-12-31

    360 acre aerial photo blocks taken on a grid of 170 statewide points. Aerial surveys flown in 1985, 1995 and 2000

  • Ground surveys
    Started: 1986-07-01
    Ended: 2006-12-31

    Ground surveys on 84 plots to assess dieback and mortality, conducted the year following the aerial surveys. Surveys conducted in 1986, 1991, 1996, 2001 and 2006

  • Images for stereoscope
    Started: 1985-07-01
    Ended: 2000-12-31

    Bursts of 5 photos taken at each point for use with stereoscope

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data


Field Name Caption Description Additional Information
Photo PointPhoto Point ID

Photo point ID number

Measurement type: Nominal
FLT ALT-MSLFlight Altitude

Flight altitude during photography, above mean sea level

Measurement type: Ratio
Unit: unavailable
Precision: 1
Latitude_DMSLatitude Degree-Minutes-Seconds

Latitude in degrees-minutes-seconds notation

Measurement type: Ratio
Unit: unavailable
Precision: 0.1
Longitude_DMSLongitude Degree-Minutes-Seconds

Longitude in degrees-minutes-seconds notation

Measurement type: Ratio
Unit: unavailable
Precision: 0.1
Latitude_DDLatitude Decimal Degrees

Latitude in decimal degrees

Measurement type: Ratio
Unit: unavailable
Precision: 0.001
Longitude_DDLongitude Decimal Degrees

Longitude in decimal degrees

Measurement type: Ratio
Unit: unavailable
Precision: 0.001
Approx Mean GridApproximate Mean Grid Size

Approximate size of the grid

Measurement type: Ratio
Unit: unavailable
Precision: 1

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

Past Sampling Equipment (No longer in use)

  • Aerial camera
    Started: 1985-07-01
    Ended: 1995-09-30

    Zeiss RMK 21/23 9" aerial camera.

  • Navigational system
    Started: 1990-07-01
    Ended: 1995-09-30

    Loran C navigational system

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

  • Site Description

    Vermont hardwood forests