The White Sturgeon (Acipenser transmontanus) population in the lower Columbia River was listed as endangered under the Species at Risk Act in 2006. Natural recruitment failure has occurred since the 1970s, with regular spawning occurring but insufficient numbers of viable offspring reaching juvenile stage to sustain the population. A recovery strategy has included the establishment of a successful hatchery to supplement the population while research into recruitment failure and collection of baseline biological data continues.
As glaciers retreat, the reduction in area available for melting ultimately causes declines in summer streamflow. In addition, evaporation from newly formed lakes and evapotranspiration from vegetation establishment on deglaciated areas would act to further reduce summer streamflow. However, these latter processes have received little attention to date. The objective of the project is to advance our ability to incorporate these processes into hydrologic models that can used to make projections of future water availability under changing climate and land cover conditions.
When a transmission cable joint in an underground vault undergoes an electrical failure this event can result in a high energy event and trigger a shock wave. Rapid and extreme pressure build up inside a manhole can cause a 200kg vault cover launching out as a dangerous projectile, which is referred as manhole incidents. The safety and reliability evaluation of the power cable joint in an underground vault has always been challenging with quite complex electromagnetic-thermal-mechanical coupling field.
The mountains of British Columbia store vast, but varying, amounts of water in winter snowpacks. Accurate estimates of snow water equivalent (SWE) in these mountains are critical for hydroelectric power generation and flood forecasting, but the current observation network is often insufficient. Working with both industry and academic partners, Mitacs interns will use airborne laser measurements of snow depth, satellite-based observations of snow cover, and ground-based snowpack measurements to reduce errors in river forecasting.
Large northward-flowing boreal rivers are an important hydroelectric resource, but effects of river regulation on downstream geomorphology and aquatic ecosystems are difficult to predict. Peace River, BC presents an ideal case study of river response to regulation, with continuous monitoring since dam construction in 1967. However, current understanding of system changes is based mainly on periodic ground-based measurements that may be less sensitive to characterize complexity at the scales at which the river responds.
Insufficient and mistimed artificial lighting within the hospital environment can disrupt circadian rhythms, adversely affecting patients sleep, mood, and recovery. In collaboration with BC Hydro, we will run a study at the Burnaby Center for Mental Health and Addictions to test whether controlled 24-hour lighting with enhanced daytime brightness and restricted nocturnal light exposure can help regulate the circadian cycle and improve the sleep and psychological well-being of patients with concurrent disorder (co-occurring substance abuse disorder and mental health disorder).
The Energy Planning department at BC Hydro looks at how the company can meet B.C.'s future electricity demand through conservation, generation and transmission, and through upgrades to existing infrastructure. As new resources require lead times to develop, BC Hydro must plan ahead so that the new resources are ready when we need them.
The current project aims to examine how tunable LED lighting influences productivity and well-being in students at the Port Coquitlams Riverside secondary school. The project aims to identify the optimal lighting conditions in order to maximize productivity and well-being in healthy students as well as students with special needs. We hypothesize that the tunable LED lighting that is consistent with the natural daylight cycle will be more beneficial to students than standard constant lighting condition in an average classroom.
The candidate will utilize his knowledge and experience in transmission line modelling to implement test cases required by BC Hydro to validate the results of measured induced voltages between the transmission lines and gas pipelines. The simulations will be performed using well-known computer packages available at power laboratories of the University of British Columbia as well as computer programs written by the candidate to implement the recently developed line model in his PhD work. Simulation results will be compared with the measurements.
Air photos and satellite images offer a comprehensive perspective on rivers that can be useful for the study and management of aquatic ecosystems. In particular, water depths can be determined remotely by relating image properties (color, brightness, etc.) to depths measured through fieldwork. However, this reliance on field data for calibration of the depth/image relationship requires costly, sometimes dangerous fieldwork and means the methods cannot be applied to data sources without associated field-measured depths.