Podcast
Questions and Answers
What is one characteristic of field notes that reflects integrity?
What is one characteristic of field notes that reflects integrity?
- Written in blue ink only
- Made from memory
- Always typed on a computer
- Recorded in the field and original (correct)
What is the corrected bearing if your FS is 192 degrees and your BS is 10 degrees?
What is the corrected bearing if your FS is 192 degrees and your BS is 10 degrees?
- 202 degrees
- 191 degrees (correct)
- 180 degrees
- 195 degrees
Which type of error is caused by a mis-adjusted declination?
Which type of error is caused by a mis-adjusted declination?
- Random error
- Systematic error (correct)
- Measurement error
- Calibration error
What is the larger scale map?
What is the larger scale map?
What must be done each year to account for the movement of magnetic north?
What must be done each year to account for the movement of magnetic north?
How far do you need to go in the field to get from point A to point B if it measures 5.0 cm on a 1:1500 map?
How far do you need to go in the field to get from point A to point B if it measures 5.0 cm on a 1:1500 map?
What is the elevation at the Point of Change (POC) if your total distance is 33 m at -19% towards the falling corner which is at 127 m?
What is the elevation at the Point of Change (POC) if your total distance is 33 m at -19% towards the falling corner which is at 127 m?
What defines the parallel lines on your compass bezel?
What defines the parallel lines on your compass bezel?
Flashcards
Characteristics of field notes with 'Integrity'
Characteristics of field notes with 'Integrity'
Field notes should be recorded in the field, be original (not copied), and have no erasures. These characteristics ensure the notes are authentic and reliable.
Corrected Bearing Calculation
Corrected Bearing Calculation
To calculate the corrected bearing, add the backsight (BS) to the foresight (FS) and divide the sum by 2. This accounts for the half-angle between them.
Good Tie Points
Good Tie Points
Good tie points are identifiable features on the ground that can be easily located in photographs. Examples include road junctions, georeferenced control points, and distinctive landmarks.
Larger Scale Map
Larger Scale Map
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Systematic Error
Systematic Error
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Magnetic North Movement
Magnetic North Movement
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Contour Rules
Contour Rules
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Forest Stand Designation
Forest Stand Designation
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Study Notes
Field Notes Integrity
- Field notes must be recorded in the field
- They must be original, not copied
- No erasures are permitted
Corrected Bearing Calculation
- If a forward sight (FS) is 192 degrees and the back sight (BS) is 10 degrees, the corrected bearing is 191 degrees.
- Calculation: 192 + (10+180)/2 = 191
Good Tie Points
- Examples include road junctions
- Feature captured with GPS (GPS'd FC)
- Identifiable features from photos
Map Scale Comparison
- A 1:5,000 scale map is larger than a 1:500,000 scale map.
Errors from Mis-adjusted Declination
- Systematic error
Resetting Declination
- Magnetic North moves, requiring annual declination adjustments.
Calculating Field Distance from Map
- If the map distance between points A and B is 5.0cm on a 1:1500 map, the field distance is 75.0m.
- Calculation: 5.0cm * 1500 = 7500mm = 75.0m
Azimuth Conversion
- An azimuth of N 25° W is equivalent to 335 degrees.
- Calculation: 360 - 25 = 335
Compass Bezel Lines
- Orienting lines
Contour Characteristics
- Contours never cross or split.
- Contours also never end.
Forest Cover Notation
- For a stand with Douglas-fir dominance and less than 20% western red-cedar, the notation is F(C).
Point of Control (POC) Elevation Calculation
- If a POC has a slope distance (SD) of 33m at -19% to a falling corner with an elevation of 127m, the elevation at the POC is 133.2m.
Elevation Error Calculation
- If the slope distance (SD) is 43.8m at 15% from an elevation of the end of traverse (EOT) to a benchmark with an elevation of 365m, and the carried elevation is 354.3m, the elevation error is 4.2m.
Safety Meeting Discussion Points
- Hazards
- First aid procedures
- Emergency response protocols
- Check-in procedures
Bird's Eye View Equivalent
- Plan view
Definition of Surveying
- Surveying is the art, science, and technology for establishing and measuring lines, distances, angles, and elevations on or beneath the Earth's surface.
Isogonic Line Representation
- Isogonic lines show magnetic field patterns around the Earth.
Principles of Good Field Notes
- Legibility
- Integrity
- Accuracy
- Arrangement
- Clarity
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