Remote sensing of snow and its application to hydrometeorological studies in western Canada.

2010 ◽  
Author(s):  
Jinjun Tong
2021 ◽  
Vol 13 (3) ◽  
pp. 366
Author(s):  
Renato Macciotta ◽  
Michael T. Hendry

Transportation infrastructure in mountainous terrain and through river valleys is exposed to a variety of landslide phenomena. This is particularly the case for highway and railway corridors in Western Canada that connect towns and industries through prairie valleys and the Canadian cordillera. The fluidity of these corridors is important for the economy of the country and the safety of workers, and users of this infrastructure is paramount. Stabilization of all active slopes is financially challenging given the extensive area where landslides are a possibility, and monitoring and minimization of slope failure consequences becomes an attractive risk management strategy. In this regard, remote sensing techniques provide a means for enhancing the monitoring toolbox of the geotechnical engineer. This includes an improved identification of active landslides in large areas, robust complement to in-place instrumentation for enhanced landslide investigation, and an improved definition of landslide extents and deformation mechanisms. This paper builds upon the extensive literature on the application of remote sensing techniques and discusses practical insights gained from a suite of case studies from the authors’ experience in Western Canada. The review of the case studies presents a variety of landslide mechanisms and remote sensing technologies. The aim of the paper is to transfer some of the insights gained through these case studies to the reader.


2017 ◽  
Vol 9 (11) ◽  
pp. 1157 ◽  
Author(s):  
David Verbyla ◽  
Troy Hegel ◽  
Anne Nolin ◽  
Madelon van de Kerk ◽  
Thomas Kurkowski ◽  
...  

Author(s):  
Roger D. Wheate ◽  
Etienne Berthier ◽  
Tobias Bolch ◽  
Brian P. Menounos ◽  
Joseph M. Shea ◽  
...  

Author(s):  
Alexandre Bevington ◽  
Hunter Gleason ◽  
Xavier Giroux-Bougard ◽  
J. Tyler De Jong

Watershed-scale landscape analysis includes many disciplines, including ecological, hydrological, and geographical sciences. The recent proliferation of free optical satellite imagery (FOSI) has changed the possibilities for the monitoring of environmental change at local and global scales. Many reviews exist for discipline-specific remote sensing applications; however, this article seeks to highlight the rapidly growing archive of FOSI and applied tools that can be used by all levels of users. Herein, ten techniques and eight applications of FOSI are reviewed, along with the specifications and limitations of various sources of FOSI. Although this review focuses on Western Canada, the democratization of FOSI is globally relevant, and the objective is to explain basic concepts via figures and reference materials to help summarize this rapidly changing field.


2011 ◽  
Vol 20 (4) ◽  
pp. 518 ◽  
Author(s):  
Nicholas O. Soverel ◽  
Nicholas C. Coops ◽  
Daniel D. B. Perrakis ◽  
Lori D. Daniels ◽  
Sarah E. Gergel

Wildfire is a complex and critical ecological process that is an integral component of western Canadian terrestrial ecosystems. Therefore, Canadian land management agencies such as Parks Canada require detailed burn severity data for the monitoring and managing of both wildland and prescribed fires. In order to gather this type of information for our study, the acquisition of Landsat imagery was acquired and the differenced Normalised Burn Ratio was computed, a technique that has been shown to be sensitive to field measured burn severity. It is less known if this technique can be transferred and extrapolated over space and time so as to make routine and operational application of the approach feasible. To answer this question, we combined burn severity data from 10 fires across western Canada to test the transferability of an overall model as well as one stratified by land cover and ecozone. Finally, we tested the statistical benefit of incorporating pre- and post-fire data directly into the statistical model using transformations of the remote sensing imagery. Our results indicated that an overall differenced Normalised Burn Ratio derived model successfully estimated burn severity for the majority of fires in the study, which supports its transferability across multiple western Canadian landscapes.


Author(s):  
Karl F. Warnick ◽  
Rob Maaskant ◽  
Marianna V. Ivashina ◽  
David B. Davidson ◽  
Brian D. Jeffs

Author(s):  
Dimitris Manolakis ◽  
Ronald Lockwood ◽  
Thomas Cooley

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