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UID:20250831T230710EDT-8290WBBAfO@132.216.98.100
DTSTAMP:20250901T030710Z
DESCRIPTION:Martyn Unsworth \n\nDepartment of Physics / Earth and Atmospher
 ic Sciences at the University of Alberta\n\n2023-2024 CSEG Distinguished L
 ecturer\n\n \n\nFriday\, March 22 \n\n11: 00 am \n\nFDA 232 \n\nMagnetotel
 lurics :  Using natural radio waves to look inside the Earth\n\nAbstract\n
 \nGeophysical exploration provides important information for resource expl
 oration\, studies of geohazards\, and investigations into how the Earth wo
 rks. Seismic exploration is the most widely used geophysical technique and
  is an invaluable tool for oil and gas exploration. However\, no single ge
 ophysical technique can answer all questions about Earth structure. An alt
 ernative method uses low-frequency electromagnetic (EM) signals to image t
 he electrical resistivity of the Earth. This rock property is sensitive to
  the presence of fluids and a number of economically important minerals. F
 or more than a century\, EM techniques have been applied in areas includin
 g hydrogeology\, mineral exploration\, and geothermal energy development. 
 EM methods focused on near-surface exploration utilize signals generated w
 ith a transmitter. For deeper exploration it is most efficient to use magn
 etotellurics (MT) – an EM method that uses natural EM signals to image sub
 surface structure.  \n\nIn this lecture\, I will describe the physics of t
 he MT method and outline its range of applications. This lecture will emph
 asize (1) how MT is now capable of working in 3-D to develop realistic mod
 els of subsurface resistivity (2) how MT is most effective when used in co
 mbination with other geophysical methods\, and (3) introduce applications 
 of societal relevance including include mineral exploration\, volcanology\
 , geothermal exploration\, and tectonic studies.\n
DTSTART:20240322T150000Z
DTEND:20240322T160000Z
SUMMARY:EPS Seminar Series: Martyn Unsworth 
URL:/eps/channels/event/eps-seminar-series-martyn-unsw
 orth-354244
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