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Geography of BC: BC landscapes from maps and images Roger Wheate: Matterhorn, Swiss Alps Mt. Assiniboine, southern BC Mt. Ida, northern.

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Presentation on theme: "Geography of BC: BC landscapes from maps and images Roger Wheate: Matterhorn, Swiss Alps Mt. Assiniboine, southern BC Mt. Ida, northern."— Presentation transcript:

1 Geography of BC: BC landscapes from maps and images Roger Wheate: wheate@unbc.ca Matterhorn, Swiss Alps Mt. Assiniboine, southern BC Mt. Ida, northern BC

2 BC: Canada’s most mountainous province ….. and the furthest away from Ottawa

3 Mapping resources > analogue maps > digital maps > air photos > satellite images > map websites

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5 BC – major roads 500 km

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7 BC historical maps – UNBC library has some, others at: http://www.bcarchives.gov.bc.ca/cartogr/general/maps.htm http://www.davidrumsey.com/luna/servlet/view/search?q=British+Columbia&sort=Pub_Date,Pub_List_No,Series_No http://www.bcarchives.gov.bc.ca/cartogr/general/maps.htm http://www.davidrumsey.com/luna/servlet/view/search?q=British+Columbia&sort=Pub_Date,Pub_List_No,Series_No

8 Canada is divided into 1:1,000,000 sheets, numbered 1-117, 8 ° longitude x 4 ° longitude 1964 1:1,000,000 scale corresponds to … 1cm = 1,000,000 cm = 10,000m = 10km MAPS

9 1:1,000,000 maps are divided into (16) 1:250,000 sheets (2 x 1 degree), completed 1970 1:250,000 corresponds to 1 cm = 2.5 km

10 Kechika (northern BC) 1 st edition mapped 1949 Postwar Aerial photography + ground survey UTM grid squares every 10km on a printed 1:250,000 map sheet

11 then into 16 x 1:50,000 (A-P), completed for provinces ~1990 1:50,000 corresponds to 1cm = 0.5 km

12 Prince George: 93G15 1980 2000

13 Topographic maps – where to get them in PG 1.UNBC map library – complete BC collection at 1:50,000 / 1:250,000 2. Buy your own : http://maps.nrcan.gc.ca/ http://maps.nrcan.gc.ca/ 3. Download a pdf or tiff scanned version: http://geogratis.cahttp://geogratis.ca 4. View online – Atlas of Canada: http://atlas.nrcan.gc.ca/site/english/index.html http://atlas.nrcan.gc.ca/site/english/index.html 5. BC provincial 1:20,000: http://www.canadamapstore.com/http://www.canadamapstore.com/

14 Zoom online to 1:50,000 map detail http://atlas.nrcan.gc.ca/site/english/index.htmlhttp://atlas.nrcan.gc.ca/site/english/index.html NTS map indexNTS map index by province NTS sheet listingsNTS sheet listings The National Topographic DataBase (NTDB) is the digital equivalent of the printed mapsNTDB

15 3D topo maps: http://www.earthdetails.com/http://www.earthdetails.com/

16 Wells- Barkerville

17 1944 1957 Aerial photos showing urban change in Prince George

18 Retreat of Castle Glacier Little Ice Age (LIA) ~1850 to 2004 Use of historical air photos to map physical change

19 Landsat satellite image, 2010 Castle Glacier, near McBride

20 Bowron Lakes – Landsat Thematic Mapper (basis of Google Earth) …. free to download since 2009

21 BC online provincial mapping: http://www.lrdw.ca/http://www.lrdw.ca/

22 Municipal mapping: http://pgmap.princegeorge.ca/http://pgmap.princegeorge.ca/ Other BC cities: see links to other maps: http://www.mapplace.ca/http://www.mapplace.ca/ Saanich Online Mapping System http://www.gov.saanich.bc.ca/resident/gis/index.html Columbia Basin Trust: http://www.sgrc.selkirk.ca/imf5_2/sites/cbt/jsp/launch.jsp http://www.sgrc.selkirk.ca/imf5_2/sites/cbt/jsp/launch.jsp

23 Exploring BC with Google maps: http://maps.google.ca http://maps.google.ca

24 Exploring BC using Google Earth

25 Printed maps have some advantages – larger display, no equipment needed, finer details etc..  Advantages of digital mapping:  Seamless (no map edges)  Variable scale (zoom and pan)  Whole province / world available onscreen (free)  Easier to update (imagery)  Integrated with associated technologies e.g. 3D

26 Seeing BC one small piece at a time …. and blowing it up http://chaosinyourtown.com/


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