IAT: Station locations and data

Overview of locations, images, and classifications

In conjunction with the Fire Regime team, Mountain Legacy’s Oblique Photography team selected 17 images for in-depth study. These images are from five areas overlooking the upper Elbow and Sheep River drainages in SW Alberta. The areas are as follows:

  • Along the south ridge of Mt. Quirk looking southwards over Quirk Creek. Identified as South Quirk in the historical surveys;
  • On the summit of All Smoke Mountain looking northwards over the Mt. Quirk area toward the Elbow River;
  • In the Mt. Hoffman area looking northwards over the Sheep River valley, and looking eastward toward Mt. Dyson and the Blue Ridge;
  • On Missing Link Mountain looking westward over the Sheep River valley towards Mt. Ware in the north and Mt. Hoffman in the south;
  • On a ridge above Ware Creek looking southward over Ware and Death Valley Creeks. Identified as Sinnot in the historical surveys.

Interactive Map 1 below allows a full exploration of the images and the landscape they cover. The Fire Regime study areas are also shown on the map.


Interactive Map 1: Overview of the 17 selected images – including an approximation of the FoV (Field of View), the direction of view (azimuth), a link to the historic image covered by the view, and a link to more images from the same location.

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Land Cover Classifications used for the LiM project

In collaboration with the Fire Regime team the following land cover classes were determined:

  • Coniferous forest: Greater than 75% of the area in coniferous trees;
  • Broadleaf forest: Greater than 75% broadleaf trees;
  • Mixedwood forest: 26 – 75% broadleaf with the rest largely coniferous trees and/or shrubs;
  • Shrubs: Greater than 25% shrub cover, less than 6% trees of any type;
  • strong>Herbaceous: Vegetated with less than 25% shrub cover and less than 6% tree cover of any type;
  • Burned: Clear evidence of burned timber on the landscape – includes snags, fallen or standing timber on any other class (e.g. burned snags in a herbaceous meadow, burned snags in a wetland, fallen logs in shrubs, etc.);
  • Water: 6% or greater standing or flowing water;
  • Wetland: Wet, swampy, aquatic moisture regime;
  • Barren ground: Sand, soil, rock;

For the three forest land covers two further classification schemes were devised – Density, and Height.
Height was set at approximately four metres: >= 4 m was deemed “high”; <4m was deemed low.
Density was set as follows:
10 – 30%;  >30 – 50%;  >50 – 70%;  >70%.
Gallery 2 gives examples of these classes applied to the South Quirk historic image.

Gallery 2: An example of the three-step land cover classification scheme created for images used in the LiM project. Images are from A. O. Wheeler’s 1987 Canadian Irrigation Survey – South Quirk Station. Visit explore.mountainlegacy.ca to see more images from this station in their geographic context.

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Each of the tabbed links at the top of this page lead to detailed information about images within the named area. This includes an interactive map of the location, links to all photos from the area (not just the ones studied in detail), land cover classification masks and data derived from the historic images, and, where available, georeferenced viewsheds of the land cover masks.

 

South Quirk Area: Images and Data

South Quirk Study Area. Click to open as an interactive map.

As part of the LiM project one station in the South Quirk area was selected for in-depth study: Arthur O. Wheeler’s 1897 South Quirk Station, part of the Canadian Irrigation Survey. The image selected is W97-14-7 (Library and Archives Canada ecopy # e0082922187).

South Quirk Station sits at N50.8271° W114.75233° (UTM Zone 11: 658294.9E 5633009.9N). The camera azimuth (direction it is pointing) is 179.93°. The Field of View is between 50 and 60°.

Table 1 below gives thumbnail images of the historic photo, the vegetation land cover mask and percentages, and conifer density and height overlays. A viewshed with areal extent of the vegetation land cover in hectares is also included. Click the thumbnails to open copies of the images in their own window.

A link to a downloadable zip file with all of the information for South Quirk, including additional classification masks for tree density and height, and, where available, a full sized georeferenced vegetation viewshed mask, follows the table.

Table 1: South Quirk Area – A. O. Wheeler, 1897 – Image W97-14-7 (ecopy # e0082922187)

IMG WH97-14-7 (e008292187)

Vegetation classification: 1897

*Viewshed of 1897 vegetation classification mask

Conifer Class:1897

Conifer Density: 1897

Conifer height: 1897

*The viewshed in the table is a visual representation only – the full-sized georeferenced viewshed can be downloaded here. A zipped file (47 MB) containing all data from Table 1 – South Quirk Area (including the full-sized viewshed) can be downloaded here.

To see all of the historic images and their modern repeats available at this location, visit South Quirk Station on explore.mountainlegacy,ca

Use the tabs at the top of the page to visit more study locations.

Sinnot Area: Images and Data

As part of the LiM project two stations in the Sinnot area was selected for in-depth study: Arthur O. Wheeler’s 1895 Sinnot 1 Station, and Rutherford J. Parlee’s 1940 Stn 12. Two photographs – one from each station – were analyzed:
W97-14-7 (Library and Archives Canada ecopy # e008292156) from the Wheeler station;
IMG 4122 (Library and Archives Canada ecopy # e011311667) from the Parlee station.

The Wheeler station sits at approximately N50.72057°, W114.53112° (UTM Zone 11: 674268E 5621659N). The camera azimuth (direction it is pointing) is approximately 205°. The Field of View is between 50 and 55°.

The Parlee station sits at approximately N50.73046°, W114.5375° (UTM Zone 11: 673781E 5622744N). The camera azimuth (direction it is pointing) is approximately 178°. The Field of View is between 55 and 60°.

As can be seen from the Sinnot Study Area map, there is quite a bit of overlap on these two images. Comparing the two reveals how much the land cover has changed – and what has remained the same – in the 45 years between the photos.

Table 2 (Wheeler, Sinnot 1) and 3 (Parlee, Stn 12) below gives thumbnail images of the historic photos, the vegetation land cover masks and percentages, and conifer density and height overlays. Where possible, a viewshed with areal extent of the vegetation land cover in hectares is also included. Click the thumbnails to open copies of the images in their own window.

Links to downloadable zip files with all of the information for both stations, including additional classification masks for tree density and height, and, where available, full sized georeferenced vegetation viewshed masks, follow the tables.

Table 2: Sinnot Study Area – A. O. Wheeler, 1895, Stn Sinnot 1, IMG W95-22-4 (LAC ecopy # e008292156)

IMG WH95-22-5

Vegetation classification: 1895

Viewshed of 1895
vegetation classification
is still in development.
Available soon.

Conifer Class, 1895, A. O. Wheeler

Conifer Density: 1895, A. O. Wheeler

Conifer height: 1895, A. O. Wheeler

 A zipped file (105 MB) containing all data from Table 2 – Wheeler, 1895, Stn Sinnot 1 – can be downloaded here.

Table 3: Sinnot Study Area – R. J. Parlee, 1940, Stn 12, IMG 4122 (LAC ecopy # e011311667)

IMG 4122 (e011311667)

Vegetation classification: 1940

Viewshed of 1940
vegetation classification
is still in development.
Available soon.

Conifer Class, 1940, R. J. Parlee

Conifer density: 1940, R. J. Parlee

Conifer height: 1940, R. J. Parlee

A zipped file (202 MB) containing all data from Table 3 – Parlee, 1940, Stn 12 – can be downloaded here.

More historic images and their modern repeats from Wheeler’s Sinnot 1 Station are available here: 1895 Wheeler Sinnot 1

More historic images and their modern repeats from Parlee’s Station 12 are available here: 1940 Parlee Stn 12

Use the tabs at the top of the page to visit more study locations.

All Smoke Area: Images and Data

As part of the LiM project two stations located on top of Allsmoke Mountain were selected for in-depth study: Arthur O. Wheeler’s 1895 All Smoke Station, and Rutherford J. Parlee’s 1940 Stn 14. Two photographs – one from each station – were analyzed:
W95-15-5 (Library and Archives Canada ecopy # e0082922152) from the Wheeler station;
IMG 4140 from the Parlee station.

The Wheeler station sits at approximately N50.74416°, W114.68944° (UTM Zone 11: 663012E 5623922N). The camera azimuth (direction it is pointing) is approximately 15°. The Field of View is between 50 and 55°.

The Parlee station sits at approximately N50.744295°, W114.688728° (UTM Zone 11: 663062E 5623937N). The camera azimuth (direction it is pointing) is approximately 367°. The Field of View is between 55 and 60°.

As can be seen from the All Smoke Study Area map, there is quite a bit of overlap on these two images. Comparing the two reveals how much the land cover has changed – and what has remained the same – in the 45 years between the photos.

Table 4 (Wheeler, All Smoke) and 5 (Parlee, Stn 14) below gives thumbnail images of the historic photos, the vegetation land cover masks and percentages, and conifer density and height overlays. Where possible, a viewshed with areal extent of the vegetation land cover in hectares is also included. Click the thumbnails to open copies of the images in their own window.

Links to downloadable zip files with all of the information for both stations, including additional classification masks for tree density and height, and, where available, full sized georeferenced vegetation viewshed masks, follow the tables.

Table 4: All Smoke Study Area – A. O. Wheeler, 1895, All Smoke, IMG W95-15-5
(LAC ecopy # e008292152)

IMG W95 (e008292152)

Vegetation classification: 1895

*Viewshed of 1895 vegetation classification

Conifer Class:1895

Conifer Density: 1895

Conifer Height: 1895

*The viewshed in the table is a visual representation only – the full-sized georeferenced viewshed (1 MB) can be downloaded here.
A zipped file (92 MB) containing all data from Wheeler, 1895, Stn All Smoke (including the full-sized viewshed) can be downloaded here.

Table 5: All Smoke Study Area – R. J. Parlee, Station 14 (All Smoke)
IMG 4140

IMG 4140

Vegetation classification: 1940

*Viewshed of 1940 vegetation classification

Conifer class: 1940

Conifer Density: 1940

Conifer Height: 1940

*The viewshed in the table is a visual representation only – the full-sized georeferenced viewshed (1 MB) can be downloaded here.
A zipped file (75 MB) containing all data from Parlee, Stn 14, IMG4140 (including the full-sized viewshed) can be downloaded here.

More historic images and their modern repeats from Wheeler’s All Smoke Station are available here: 1895 Wheeler All Smoke

More historic images and their modern repeats from Parlee’s Station 14 are available here: 1940 Parlee Stn 14

Use the tabs at the top of the page to visit more study locations.

Images and data from the Missing Link Study area arriving soon.

 

 

Images and data from the Hoffman Study area arriving soon.

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