The areas where the mysterious feet have washed ashore. (Black Press File)

Coroners use new tool to crack mystery of the floating feet in the Salish Sea

BC Coroner Service enlists help of UBC professor’s currents tracking model

BC Coroners Service (BCCS) are using a complex scientific model to crack the mystery of the Salish Sea’s floating feet.

1887 was the first recorded find of a floating stump of a foot, at Vancouver’s so named Leg-in-Boot square, and over the last 12 years 21 feet have washed ashore in Washington State and western B.C.

RELATED: Hundreds of floating ‘Sponge Bobs’ help track ocean currents

Theories have ranged from Asian tsunami victims and plane crashes, to a serial killer and mafia hits, but the authorities now think suicides and accidents are more likely causes.

The Special Investigations Unit of BCCS has sought help from a UBC professor, in the Earth, Ocean and Atmospheric Sciences department, who has created a finely tuned computer system called the SalishSeaCast model.

“Susan Allen and her team have constructed a model which records and predicts the tidal surface of the straits; naturally, our team wanted to use that to try and predict, for example, where feet may have come from and how they travel. So Susan Allen’s team was able to send us tidal strength and direction data sets from times just before feet have been discovered to try and get an inkling where they may have come from,” says Andy Watson, Communications Manager for BCCS.

Allen’s model is a real-time research and casting system for the Salish Sea, constructed in collaboration with a number of other scientific and government partners. It is run every day and is so accurate, it has been used to track migrating salmon, predict oil spill movement and by ferries to navigate more safely.

RELATED: Scientists warn warmer and more acidic oceans threaten marine life

“Finding out how the strait works is infinitely fascinating to me,” says Allen.

Her model uses 14,400,000 box shaped instruments half a kilometre by half a kilometre in size, to track the way the ocean moves. Using fluid dynamic equations for each box, her team is able to calculate the myriad contributing forces, as well as taking other factors into consideration, such as the outflow of 150 different rivers.

As a result, Allen’s group can track and predict the currents, sea temperature, water salinity and storm surges in the strait of Georgia. There is also biological modelling that predicts phytoplankton proliferation and soon there will be an ocean acidification component.

“We have an awful lot of boxes [to analyze] but computers are good at that,” she says wryly.

These computers are some of the most powerful in the country and are run by organizations such as Ocean Networks Canada, Compute Canada, Institute of Ocean Sciences and Environment and Climate Change Canada.

BC Coroners Service contacted Allen specifically to help their investigations into the floating feet, and corpses that originated in Vancouver but washed ashore on Gulf Islands.

ALSO READ: Vancouver Island overdue for the big one, can also expect mega-thrust tsunami

“Of course, the tides are unpredictable and ever-changing based on time throughout the day. We know when a particular foot was discovered, for example, but we have no idea when it actually washed up on shore we only know when it was reported to us. However, the data is certainly useful as it gives us a general indication on direction of tidal flow within the area and where remains that might be floating on the surface of the water may go to or come from,” says Watson.

Allen says that she first met the special investigations team this fall and they asked about three specific dates. She is glad her model is being used widely.

“It’s wonderful to know it’s being used in the community. I think it will continue to be used for a bunch of applications and in ways I haven’t even thought of.”

BC Coroners say they will continue to use all tools at their disposal to help their investigations.

“No formal conclusions have been drawn as of yet,” notes Watson.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Sidney cadet takes home gold at South Island Zone biathlon

‘Rising star’ sets her sights on provincials

Future space homes could be made of mushrooms

NASA explores use of fungi to build structures in space

All Carlton Cards stores closing in the coming weeks

Schurman Retail Group stores across North America will close, including 79 in Canada

Meet Arthur Heart, Oak Bay Avenue’s resident stickman

Contest winner dubs stickman Art Heart

Four things ‘not’ to do if you run into Prince Harry and Meghan in B.C.

Here is a list of some things you definitely should NOT do, according to the BBC

Greater Victoria Crime Stoppers wanted list for the week of Jan. 21

Greater Victoria Crime Stoppers is seeking the public’s help in locating the… Continue reading

B.C. RCMP spent roughly $750K on massive manhunt for Port Alberni men

Manitoba RCMP helped with 17-day search through the province’s northern terrain

Island Bakery in Cobble Hill to close

Cobble Hill store in business since 1982

Man killed by police in Lytton called 911, asking to be shot: RCMP

Howard Schantz, also known as Barry Schantz was killed following a standoff at his Lytton home

Canadian public health agencies ramping up preparations in response to new virus

Health officials have said there are no confirmed cases of the emerging coronavirus in Canada

‘Naughty boy’: Monty Python star Terry Jones dies at 77

The comedian has been suffering from a rare form of dementia

Most Read