The results of a new study linking hydraulic fracturing or fracking to induced earthquakes in B.C. and Alberta is reason to immediately halt the controversial extraction technique from being used in gas fields in B.C. according to Andrew Weaver, leader of the B.C. Green Party and MLA for Oak Bay-Gordon Head.   “I am calling on both the government and the official opposition to join me in supporting a moratorium on horizontal fracking in British Columbia,” Weaver said in a statement released Tuesday. “Other jurisdictions, like Quebec, New York, New Brunswick and Nova Scotia, have already suspended the practice and B.C. should follow suit.”   The study found a direct link between fracking and earthquakes in the Western Canadian Sedimentary Basin over the last 25 years. The group studied more than 12,000 wells and seismic events larger than magnitude 3.0.   The new research, published in Seismological Research Letters on Tuesday by a group of Canadian researchers, concludes that 90 per cent of seismic activity in the region was the direct result of fracking operations.

Due to the massive amount of fracking sites in operation, this amounts to under one per cent of wells triggering earthquakes. 

While researchers acknowledge the figure is small, “it is important for us to realize that indeed hydraulic fracturing can induce earthquakes," Honn Kao, a research scientist with the Geological Survey of Canada and one of 13 co-authors of a study, told the CBC.   "But the evidence so far indicates there are other factors that may be important in this process as well, so that we cannot blame all the hydraulic fracturing operations for inducing big earthquakes," he said.   Previous research has determined a relationship between earthquakes and wastewater injection sites used to dispose of the sometimes millions of gallons of contaminated water produced at frack sites. But this is the first study to identify a definitive link between the process of fracking itself and induced seismic activity.   An earthquake measuring between 4.2 and 4.8 on the Richter scale rocked the town of Fox Creek, Alberta, in January of this year, raising concerns that increased seismic activity in the region is due to local fracking operations. The quake resulted in the closure of a fracking operation.   "It's critical that we get to a complete scientific understanding of the issue," David Eaton, a University of Calgary geophysicist and a co-author of the study, told the CBC.   Fracking, a high-pressure drilling process, poses a significant threat to underground sources of drinking water, which are inadequately mapped in Canada.   In a high-profile case currently before the Supreme Court of Canada, Alberta landowner Jessia Ernst is arguing fracking contaminated her water supply eight years ago and that poor regulation surrounding the process left her without adequate protection.     According to Weaver, these kinds of situations should not be occurring.   “I am calling for a moratorium on horizontal fracturing in B.C. until we establish scientific certainty on the risks it poses,” he said.   “Earthquakes, groundwater contamination, fresh water use, sour gas leaks, environmental degradation and terrain modification, are all concerning side effects of fracking and they warrant comprehensive and cumulative scientific review.”    There are significant fracking operations in northeastern B.C. and a recent study by the B.C. Oil and Gas Commission found that between August 2013 and October 2014 fracking operations triggered 231 earthquakes.   The report noted 38 earthquakes were caused by wastewater injection and 193 seismic events were the result of fracking operations in the area.   The B.C. government, which is intent on building an liquefied natural gas (LNG) export industry in B.C., has thrown its support behind the province’s growing gas industry.   There are hundreds of new wells drilled every year in B.C., Weaver cautioned.

“Now we have the scientific evidence showing a clear link between fracking and earthquakes, but we really have no idea what the risks of this increased seismic activity amount to. We are flying blind,” Weaver said.   “The BC Green Party has consistently called for a moratorium on fracking in our province,” he said. “To continue to allow horizontal fracking in B.C. is irresponsible in light of mounting evidence.”

Image: Province of B.C. via Flickr

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Seismic airguns are being fired underwater off the east coast of Greenland to find new oil reserves in the Arctic Ocean. But this activity “could seriously injure” whales and other marine life, warns a new report conducted by Marine Conservation Research and commissioned by Greenpeace Nordic.

The oil industry is increasingly looking towards the region, as oil and gas reserves become more accessible as climate change causes large areas of Arctic sea ice to melt.

Global oil companies including BP, Chevron and Shell all own drilling rights in the Greenland Sea and are the likely customers for the data gathered by the Norwegian geophysical company conducting the seismic testing, TGS-Nopec.

Wildlife Impacts

However, this seismic operation is taking place adjacent to ‘closed areas’ and overlaps with ‘areas of concern’ that have been appointed by the Greenlandic authorities, for the protection of narwhals, walruses and a critically endangered population of bowhead whales.

According to Greenpeace, the airguns emit 259-decibel blasts towards the seabed in order to find possible oil reservoirs. Above water, this sound intensity would be perceived by humans as approximately eight times louder than a jet engine taking off.

As the report details, seismic testing can damage marine mammals’ hearing and their ability to communicate as well as disrupting behaviour, feeding and migration patterns. This is because these mammals, and whales in particular, rely on sound to navigate, communicate and search for food.

There are also increasing indications that seismic testing can cause reproductive failure and increase the risk of strandings and ice entrapments.

Seismic Activity

Seismic testing has been conducted every summer in Greenland since 2011. And in April, TGS announced it had also begun doing seismic testing of the Barents Sea. As DeSmog UK has reported, Norway is leading the charge in Europe for Arctic oil development as production at its first offshore oilfield is set to begin “in a few weeks”.

The report's author, Dr Oliver Boisseau, a senior research scientist at Marine Conservation Research, said: “It is alarming to consider the vast amount of seismic activity being planned and conducted in the High Arctic, given the fragile nature of the ecosystem and the potential for disturbance and harm to whales.

“It seems justified to urge for extreme caution given both the lack of data and the limited understanding of the short and long term impact of seismic noise on sensitive Arctic species, especially the narwhal.”

Photo: Glenn Williams via Wikimedia Commons

As Boisseau highlights, the narwhal is particularly vulnerable to seismic testing. While some whales react to seismic sounds tens of kilometres away by trying to avoid them, narwhals are unique in their tendency to "freeze and sink" in response to a threat.

The report explains: “This means narwhals are more susceptible to damage from airgun blasts as they are not inclined to avoid regions impacted by noise.”

Narwhals are also more susceptible to becoming trapped in the ice in response to blasts from seismic vessels. Between 2008 and 2010 three entrapments of narwhals were reported coinciding with seismic activities in Greenland during the summer period. The narwhals delayed their autumn migration from Baffin Bay, leading to them travelling while winter sea ice started forming, causing thousands of narwhals to become entrapped in the ice and die.

This was the first time narwhal entrapments had ever been reported in this area.

Research Gap

However, the Marine Conservation Research report stresses that there is a “massive research gap” in this field. To date, no strandings of Arctic whale species have been reported, “which could mean they have not occurred or that they have not been reported due to the remoteness and extremely thin population density,” the report explains.

“Based on available data, the authors ‘urge for extreme caution’ amongst decision makers before allowing seismic activity in the Arctic,” the report argues. “From the research at hand, it is clear that noise from seismic activity impacts whales.”

Arctic campaigner Sune Scheller, on-board Greenpeace ship Arctic Sunrise headed to Greenland, said: “Seismic blasting in icy waters is just one of the horrific practices the oil industry is doing in the Arctic, firing airguns into this important and beautiful ocean.

“Shell and other oil companies are hoping the world won’t know that seismic blasting exists, even less notice the danger it poses to endangered whales and other marine life, but we’re here to expose this madness and keep eyes and ears on a harmful operation.”

@kylamandel

Photo: Greenland Travel via Flickr

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