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time series

Oct 28, 2016

The extent of habitat compression and hypoxia in Saanich Inlet from the 2016 hypoxia cycle

​

Guest post by Dr. Jackson Chu, Post-doctoral fellow, Fisheries & Oceans, Canada

Dr. Jackson Chu

As part of his PhD research at the University of Victoria, Jackson examined the ecology of oxygen deficient systems by using Ocean Networks Canada data collected over the last decade. As an early adopter to seafloor observatories, his research and participation in ONC field research can be dated back to his first expedition with VENUS in 2007.

How do you determine when a system has become oxygen deficient, or hypoxic, for the species in our marine ecosystems? Part of the answer comes from mapping...

Read more

habitat compression | hypoxia | saanich inlet | benthic | Jackson Chu | marine ecosystem | time series | transect

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Feb 28, 2016

A decade of discovery in Saanich Inlet

​Ten years ago, the world’s first complex, cabled seafloor observatory was installed in Saanich Inlet near Victoria, British Columbia. On 8 February 2006, live data began streaming from instruments on the seafloor to computers around the world. This around-the-clock access to the ocean revolutionized the way ocean research is conducted.

Previously, gathering ocean data was limited to research expeditions; ocean scientists on board research vessels taking isolated measurements that provided a snap-shot perspective of the ocean. Now, after 10 years of observatory science, Ocean Networks Canada (ONC) has accumulated the longest high resolution time-series of data that monitors the physical health of the ocean. 

... Read more

saanich inlet | observatory science | Snelgrove | Anderson | Sato | time series

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Sep 26, 2013

Time Series

A “time series” is a set of measured values separated by regular, or irregular, intervals in time. An example might be the temperature recorded from a thermistor every minute. The resulting time series, when plotted, will show how the temperature varied over time. The statistics of these variations are often of great interest. If it is a long record (i.e. decades), it might reveal climate variations. Short records might show daily heating and cooling, or the influence of mixing. Intermediate length records might show seasonal variations. Simple statistics might include the mean (average), or trend (slope) of the time series. The mean and trend are the first and second modes of a time series. More advanced analysis, i.e. auto-correlations and ...

Read more

time series | data plots | sampling rates

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Feb 20, 2013

Seven Years In Saanich Inlet

A time series of seven years of data from ONC's Saanich Inlet observatory.

7-year plot of temperature (red), sigma-T (blue), salinity (green) and oxygen (purple) in Saanich Inlet (depth 96 m).

This full length time series from Saanich Inlet reveals seven full seasons of variability. The VENUS Observatory has been collecting data since February 2006. The data not only show the cooling and...

Read more

saanich inlet | venus | Image of the Week | time series | data | El Nino oscillations

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Saanich Inlet State of the Ocean plot - 4 years.

The above plot shows the just-released VENUS "State of the Ocean" data product. The plot shows the Saanich Inlet instrument platform data over the last 4 years concatenated from multiple sensors. This high resolution, nearly-continuous dataset detects seasonal variations and climatic shifts in the coastal Pacific Ocean. 

Read more

State of the Oceans | saanich inlet | time series

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