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Kimberley GSAR Maps . Instructor: Tim McKee. Objectives. Types of maps used in SAR Identify maps by name and sheet # Using map scales Grid systems Geographic Coordinate System – Lat/Long UTM (Universal Transverse Mercator System) Grid Coordinates Map legends Identify map features
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Kimberley GSARMaps Instructor: Tim McKee
Objectives • Types of maps used in SAR • Identify maps by name and sheet # • Using map scales • Grid systems • Geographic Coordinate System – Lat/Long • UTM (Universal Transverse Mercator System) Grid Coordinates • Map legends • Identify map features • Interpret contour lines • Map handling
Map Types • Topographic – most commonly used by KSAR • TRIM Maps • Search Status Map • Orthophotos • Air photos • Tourist/trail maps • Backroads map book • Forestry maps
Topographic Maps • Scales of 1:250 000 and 1:50 000 • Most often used by KSAR • Produced by Natural Resources Canada conforming to National Topographic System – NTS • Identified by unique map names and numbers • Wealth of information
Map Scales • Scale refers to the relationship between distance on a map and the corresponding distance on the ground • 1:50 000 – 1cm on the map equals 50 000cms on the ground • 50 000cm = 500m = 0.5km • UTM Grid Lines spaced 2cm = 1km
UTM Grid • More commonly used by SAR groups and recreational map users • Uses the crossing of a north-south grid line and an east-west grid line to describe a location • Easting is always given first and the northing coordinate second • In the door (Easting) and up the stairs (Northing) • Specify NAD27 or NAD83 when giving coordinates
NAD27 and NAD83 • Grid Coordinates can differ by several hundred meters
UTM Coordinates The coordinates for this knoll are 375136 St. Mary’s Lake or Easting 11U 537500 Northing 5513600
Latitude and Longitude • Used by pilots and aircraft personnel • Measured in degrees, minutes and seconds • 116° 55’ 30” N – one hundred sixteen degrees, 55 minutes and 30 seconds North • 60 seconds = 1 minute • 60 minutes = 1 degree • Latitude given first, then longitude • Longitude decreases West to East • Estimate seconds to the nearest 5” or 1/12th of a minute
Lat/Long Coordinates • The coordinates for this knoll are 49° 46’ 30” N 116° 28’ 45” W
Topo Map Colors • Black – buildings, railways, power lines, co-ordinates, precise elevations, border information • Red – paved roads, highway #’s,urban developments • Orange – unpaved roads, unclassified roads and streets • Brown – contour lines, contour elevations, spot elevations, sand • Blue – water, ice, UTM grid info • Grey – back of map legend • Green – wooded areas (platoon of troops)
Contour Lines • Connect points of equal elevation • Contour intervals 25m or 100ft • Gentle slope: wide spacing (picture 5) • Steep slope: lines are close together (picture 4) • Peak: circle (picture 1) • Valleys: V points to a higher elevation • Ridges: V points to a lower elevation • Direction of flow in rivers: V always points upstream
Map Handling • Handle maps carefully! • Use map cases in the field or photocopies • Keep dry • Fold properly • Leave folded when possible
A. On a map, points A and B are separated by 4.0 cm. Points C and D are separated by 11.2 cm. What is the actual distance in km between these points for the map scales given below? ScaleA - BC - D 1 : 25 000 __________________ __________________ 1 : 50 000 __________________ __________________ 1 : 125 000 __________________ __________________ B. Points E and F are actually 800 m apart. Points G and H are actually 3.6 km apart. What will be the separation of each pair of points on maps with the scales given below? ScaleE - FG - H 1 : 10 000 ___________________ __________________ 1 : 50 000 ___________________ __________________ 1 : 250 000 ___________________ __________________ C. What is the actual distance between the following pairs of points on the St. Mary’s Lake map? • Summit of Mount McKay to MountEvans ______ • Knoll at 502905 to road intersectionat 480915 ______ • Outlet of White Boar Lake to Meachen Creek Road at 461895 ______
A. On a map, points A and B are separated by 4.0 cm. Points C and D are separated by 11.2 cm. What is the actual distance in km between these points for the map scales given below? ScaleA - BC - D 1 : 25 000 1 km 2.8 km 1 : 50 000 2 km 5.6 km 1 : 125 000 5 km 14 km B. Points E and F are actually 800 m apart. Points G and H are actually 3.6 km apart. What will be the separation of each pair of points on maps with the scales given below? ScaleE - FG - H 1 : 10 000 8 cm 36 cm 1 : 50 000 1.6 cm 7.2 cm 1 : 250 000 0.32 cm 1.44 cm C. What is the actual distance between the following pairs of points on the St. Mary’s Lake map? • Summit of Mount McKay to MountEvans 6.5 km • Knoll at 502905 to road intersectionat 480915 2.5 km • Outlet of White Boar Lake to Meachen Creek Road at 461895 2.75 km
D. Give the UTM grid coordinates of the following features on the map provided: FeatureGrid Coordinates 1. Mount Evans Summit ________________________ 2. End of road at head of Fiddler Creek ________________________ 3. Mayo Lake ________________________ 4. Bridge on Meachen Creek Road ________________________ 5. Col NW of Mount Evans ________________________ E. Identify what is located at points with the following grid coordinates on the map provided: Grid CoordinatesFeature 1. 535946 _________________ 2. 518871 _________________ 3. 476864 _________________ 4. 525961 __________________
D. Give the UTM grid coordinates of the following features on the map provided: FeatureGrid Coordinates 1. Mount Evans Summit 507892 St. Mary’s Lake 2. End of road at head of Fiddler Creek 490879 82 F/9 3. Mayo Lake 448862 St. Mary’s Lake 4. Bridge on Meachen Creek Road 456892 82 F/9 5. Col NW of Mount Evans 503899 St. Mary’s Lake E. Identify what is located at points with the following grid coordinates on the map provided: Grid CoordinatesFeature 1. 535946 Bridge 2. 518871 Lake 3. 476864 Knoll 4. 525961 Marsh/Oxbow
LATITUDE AND LONGITUDE F. Give, to the nearest 5 seconds, the latitude and longitude of the following points on the topographic map you have been given: LocationLatitudeLongitude Summit of Hagwilger Peak o ' "No ' "W Sawmill by New Hazelton o ' "No ' "W The “16” on Hwy 16 ___o ' "No ' "W G. Identify the most prominent feature to be found at points with the following latitude and longitude on the map provided: 1. Latitude 49° 49’ 35” N ______________________________ Longitude 116° 24’ 60” W 2. Latitude 49° 50’ 5” N ______________________________ Longitude 116° 27” 20” W 3. Latitude 49° 47’ 25” N ______________________________ Longitude 116° 27’ 40” W
LATITUDE AND LONGITUDE F. Give, to the nearest 5 seconds, the latitude and longitude of the following points on the topographic map you have been given: LocationLatitudeLongitude Summit of Hagwilger Peak 55° 11’ 50” N 127° 35’ 55” W Sawmill by New Hazelton 55° 14’ 35” N 127° 35’ 50” W The “16” on Hwy 16 55° 14’ 20” N 127° 31’ 25” W G. Identify the most prominent feature to be found at points with the following latitude and longitude on the map provided: 1. Latitude 49° 49’ 35” N Summit of Irish Queen Mountain Longitude 116° 24’ 60” W 2. Latitude 49° 50’ 5” N Intersection of Calamity and Dewar Creek Longitude 116° 27” 20” W 3. Latitude 49° 47’ 25” N End of road up Copper Creek Longitude 116° 27’ 40” W