Tag Archives: environment

Extreme tides and Winter ice

Posted on February 5, 2015 by

Figure 1. Winter ice on the salt marshes of Minas Basin photographed from Wolfville, Nova Scotia, March 1, 2007. View to the North.  What is an estuary? An estuary is a bay with an open connection to the sea. Rivers … Continue reading →

Posted in climate change, General geoscience, Nova Scotia | Tagged , , , , , , , , , , , , , , , , , , | 1 Comment

Four Billion Years and Counting: Canada is as old as the Earth and this book tells all

Posted on December 10, 2014 by

    Just published! 400-pages on Canada’s geologic heritage in both official languages for only $39.95! Order your English language copy here and your French copy here.  The book’s website has tons of freely downloadable illustrations and other materials for … Continue reading →

Posted in General geoscience, Geoheritage | Tagged , , , , , , , , , | Leave a comment

Canadian Earth Science for @PMHarper 9 – measuring the thickness of polar sea ice through time

Posted on November 29, 2014 by

The preamble to this reviews series, categorized as “Canadian Earth Science for @PMHarper”, is here. — de Vernal, A., R. Gersonde, H. Goosse, M.-S. Seidenkrantz, and E.W. Wolff, 2013, Sea ice in the paleoclimate system: the challenge of reconstructing sea … Continue reading →

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#Katrina10. #Louisiana is still disappearing

Posted on October 27, 2014 by

I wrote this blog post in November of 2014. I am reblogging it today, on the 10th anniversary of Hurricane Katrina. Land loss map of South Louisiana. Image source here. Click on image to enlarge.  Is it the weather? No … Continue reading →

Posted in climate change, General geoscience, Natural hazards | Tagged , , , , , , , , , , , , , , , , , , , | 2 Comments

And then there were two: Global #Geoparks in Canada

Posted on October 2, 2014 by

UPDATE: 19 NOVEMBER 2015. Great News!! Global Geoparks are now official UNESCO sites. “A what? ” “A Global Geopark” “Okay, I give up” Most of you have no idea what a Global Geopark is. That’s not surprising, because – according to my … Continue reading →

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Canadian Earth Science for @PMHarper 6 – Would CO2 storage in deep saline aquifers carry an environmental risk for shallow aquifers?

Posted on June 18, 2014 by

The preamble to this series is here. All reviews are stored in the category “Canadian Earth Science for @PMHarper” (see right hand column). ===== Lemieux, J.-M., 2011, (Review:) The potential impact of underground geological storage of carbon dioxide in deep saline … Continue reading →

Posted in Canadian Earth Science for @PMHarper, Energy, General geoscience | Tagged , , , , , , , , , , | Leave a comment

A Tidal power lagoon in Nova Scotia’s Scott’s Bay?

Posted on May 1, 2014 by

Nova Scotia is where I live – a 700-odd km long NE-SW peninsula that more or less parallels the edge of the continent. What (almost) separates us from that continent is the Bay of Fundy, the Canadian extent of the Gulf … Continue reading →

Posted in Energy, General geoscience, Nova Scotia | Tagged , , , , , , , , , , , , | 1 Comment

Canadian Earth Science for @PMHarper 4 – Ice ages and Klondike gold

Posted on April 22, 2014 by

The pre-amble to this series of reviews is here Froese, E.G., Zazula, G.D., Westgate, J.A., Preece, S.J., Sanborn, P.T., Reyes, A.V., Pearce, N.J.G., 2009, The Klondike goldfields and Pleistocene environments of Beringia. GSA Today, v. 19, no. 8, p. 4-10. … Continue reading →

Posted in Canadian Earth Science for @PMHarper, General geoscience, Geoheritage | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Tantalum, your smart phone and the world economy

Posted on January 4, 2014 by

I listen to BBC World Service a lot. Today I caught the program “More or Less” (http://www.bbc.co.uk/programmes/b006qshd), presented by Tim Harford. “More or Less” is about “the numbers and statistics used in political debate, the news and everyday life”.  Today’s … Continue reading →

Posted in General geoscience | Tagged , , , , , , , | 1 Comment

Barrier Island Erosion / Sea Level Rise / Transgressive Anthropogenic Sequences /

Posted on February 20, 2013 by

Thanks to Twitter, I was made aware of a recent US report, entitled “Coastal impact, Adaptation and Vulnerabilities”. A summary of the report is here: http://www.usgs.gov/newsroom/article.asp?ID=3496#.USVxRFc-6OJ. What caught my attention on that page was the ‘before and after Hurricane Sandy’ … Continue reading →

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Wrong Question: can fracking be done safely?

Posted on February 16, 2013 by

I published this post in February 2013. I have continued to add material to it, so the most recent bits of info are at the top of the page: scroll down for the original, which hasn’t been changed. February 12, 2015 Dr. … Continue reading →

Posted in Energy, Nova Scotia | Tagged , , , , , , , | 1 Comment

Rachel Carson – as relevant today as she was 50 years ago

Posted on November 29, 2012 by

There is a new biography of Rachel Carson, the author of “Silent Spring”, which was published 50 years ago this year. The biography is by William Souder and is entitled “On a Farther Shore: The Life and Legacy of Rachel … Continue reading →

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