Annual and Longer Term Variations of Deepwater Properties in the Coastal Waters of Southern British Columbia

1975 ◽  
Vol 32 (9) ◽  
pp. 1561-1587 ◽  
Author(s):  
G. L. Pickard

Observations of deepwater properties (temperature, salinity, dissolved oxygen, and the derived values of density) have been assembled from the Data Reports of the Institute of Oceanography of the University of British Columbia and values of the first three properties are presented to show the characteristics of their annual variations at 18 locations in the coastal waters of southern British Columbia. Information on the long-term variations (for 6 yr or more) of all properties is presented for eight of the locations. Variations of 1-yr period are evident to 100 m depth at all locations and to 300 m or more at many of them. The variations are of different forms, sinusoidal, peaked or saw-tooth, and there are some differences in phase between the property variations at different locations. Long-term variations (over several years) of annual mean values are small and decrease with increase of depth. Much of the evidence suggests that the changes below 100 m depth are due to longitudinal advection (flow) from elsewhere rather than to vertical transfers from the sea surface in the immediate locality.

1971 ◽  
Vol 28 (8) ◽  
pp. 1077-1106 ◽  
Author(s):  
G. L. Pickard

The first systematic study of physical oceanographic characteristics of the fjord inlets of Chile was carried out by the Institute of Oceanography of the University of British Columbia during March 1970 as Phase V of the Hudson 70 Round-the-Americas Expedition of the Bedford Institute, Canada Department of Energy, Mines and Resources.Observations were made of temperature, salinity, and dissolved oxygen at 175 stations in 32 inlets and in the passages outside them, and soundings were made along 3500 km of track. The sounding data are presented as longitudinal sections, and water properties are summarized in temperature–salinity and temperature–dissolved oxygen correlation plots and characteristic diagrams; comparisons are made with observations for the British Columbia and Alaska inlets reported by Pickard in 1961 (18: 907–999) and 1967 (24: 1475–1506) in the Journal of the Fisheries Research Board of Canada. Observations were also made of nutrients in some Chilean inlets; these will be reported at a later date.In mean and extreme values, the dimensions of the inlets in Chile are similar to those in British Columbia/Alaska; only two shallow sills were recorded. More inlets had glaciers contributing melt water directly to them and more had icebergs present than is the case in the northeast Pacific inlets. Vertical salinity profiles in Chile were similar to those in British Columbia/Alaska, but the thinner surface layer was of higher salinity, except in the inlets having icebergs, and the deepwater salinities were 1–2‰ higher in Chile. Temperatures were 2–5 degrees C higher in Chile except in the iceberg inlets where surface values were lower than those in Alaska. Several of the iceberg inlets in Chile had much more complicated temperature/depth profiles than in Alaska, with as many as seven maxima and minima below the surface. The glacial silt in the inlet waters was more conspicuous and extensive in Chile than in British Columbia/Alaska. Dissolved oxygen values in Chile were much the same as in British Columbia/Alaska with higher values in the iceberg inlets in Chile than in Alaska, and there was little evidence of very low values characteristic of stagnant basins. The lack of low dissolved oxygen values suggests free exchange with outside waters and the inlet deepwater characteristics indicate that the effective sill depths between inlets and the ocean are only 100–150 m deep. At least four distinct major regions are evident from water properties among the inlets of Chile.


2016 ◽  
Vol 179 (7) ◽  
pp. i-ii
Author(s):  
Vicki Adams

Vicki Adams grew up in Vancouver, Canada, and graduated with a degree in animal science from the University of British Columbia before being accepted into vet school in Saskatchewan. Her animal science background has given her the population perspective that is so important in epidemiology and she now runs her own consulting company, Vet Epi


1993 ◽  
Vol 18 (8) ◽  
pp. 1259-1266
Author(s):  
Sally Thorne ◽  
Carol Jillings ◽  
Donelda Ellis ◽  
JoAnn Perry

2021 ◽  
Author(s):  
Yu-Kai Chen ◽  
Chia-Yi Pan ◽  
Yi-Chen Wang ◽  
Hsiu-Ju Tseng ◽  
Bo-Kun Su ◽  
...  

AbstractIn this study, the interannual variations of ichthyoplankton assemblages in the Taiwan Strait (TS) during the winters of 2007–2013 were determined. The cold China Coastal Current (CCC) and Mixed China Coastal Water (MCCW) intruded into the TS and impinged with the warm Kuroshio Branch Current (KBC) with annual variations. Consequently, the ichthyoplankton community in the TS was mainly structured into two assemblages characterized by differing environmental conditions. The composition of the warm KBC assemblage was relatively stable and was characterized by Diaphus B and Bregmaceros spp. By contrast, the cold MCCW assemblage demonstrated considerable variations over the years, with demersal Gobiidae and Scorpaenidae families considered the most representative. In addition, Benthosema pterotum and Trichiurus spp. were common in both KBC and MCCW assemblages. The distribution of the KBC assemblage demonstrated sharp boundaries in the frontal zones, whereas changes in the assemblage structure between the frontal zones were gradual for the MCCW assemblage, particularly when demersal taxa were dominant. Sea surface temperature and salinity were most strongly associated with variability in the assemblage structure during the study period. Thus, this paper provides a better understanding of long-term larval fish dynamics during winter in the TS.


2014 ◽  
Vol 15 (2) ◽  
pp. 157-168 ◽  
Author(s):  
Leanne Bilodeau ◽  
Jackie Podger ◽  
Alaa Abd-El-Aziz

Purpose – Universities can provide a leadership role to develop and mobilize knowledge to meet societal needs. In fulfilling this mission, universities can also serve as agents of sustainable development on campus and in communities they serve. The purpose of this article is to describe the drivers that have advanced the University of British Columbia Okanagan campus' operational and academic sustainability objectives; the initiatives and partnerships developed on campus and in the community in response to these drivers; and the outcomes and lessons learned. Design/methodology/approach – This article summarizes the experience of the University of British Columbia Okanagan campus in leveraging key drivers to develop sustainability initiatives and partnerships for greater operational efficiencies, cost savings, environmental stewardship and applied research. The university's leadership commitment to sustainability, economic opportunities and provincial legislative requirements are among the drivers discussed. This paper also provides an innovative partnership framework to support sustainable community development. Findings – Drivers of sustainability in higher education can contribute to the development of sustainability initiatives and partnerships that benefit institutions and communities and achieve operational and academic sustainability mandates. Practical implications – This article provides information that can be applied by institutions of higher education to advance sustainability within the context of current economic conditions and societal needs. Originality/value – The experience of the campus and the partnership framework presented in this paper is original. The framework provides a mechanism to engage students, faculty and the community in sustainable community development research. Key insights from multiple perspectives and lessons learned are shared.


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