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Stories by David Bressan

The Sciences

Tsunami in the Geological Record

The tsunami of Indonesia 2004 and Japan 2011 showed that they are a common element associated with earthquakes. Modern databases list more than 2.000 tsunami events worldwide in the last 4.000 years, most of them recorded in historic documents, chronicles and even myths - and yet tsunami deposits in the geological record seem to be relatively rare.In theory a tsunami can trigger a variety of erosion and depositional processes, like uprush and backwash currents, turbidity currents, debris flows and landslides, therefore also the formed sediments can vary from fine-grained sediments to large boulders.- When the tsunami hits the coast it will first erode older sediments...

December 26, 2012 — David Bressan
The Sciences

Book Review: An Introduction to Forensic Geoscience

An Introduction to Forensic GeoscienceBy Elisa BergslienISBN: 978-1-4051-6054-4Paperback514 pagesMay 2012, Wiley-Blackwell Geophysicist and meterologist Alfred Wegener once lamented in the foreword of his " The Origin of Continents and Oceans " that " We are like a judge confronted by a defendant who declines answer, and we must determine the truth from the circumstantial evidence.[] "; he continues " It is only by combing the information furnished by all the earth sciences that we can hope to determine "truth"… "It seems that these words can be used also to describe the book " An Introduction to Forensic Geoscience ", published in 2012 and written by hydrogeologist Elisa Bergslien , as she demonstrate in 11 main chapters how methods used in the fields of geology, geography, geomorphology, sedimentology, mineralogy and petrology, palaeontology and biology can be used to collect evidence and help to solve crimes...

October 11, 2012 — David Bressan
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