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12.221 Field Geophysics

12.221 Field Geophysics. Instructors Tom Herring, tah@mit.edu ; Brad Hager brad@chandler.mit.edu Web: http://www-gpsg.mit.edu/~tah/12.221. Aims of IAP 2005. Field camp location north of Blythe California near Vidal. Approximate location latitude 34.06 N, Longitude 245.46 E (-114.54 W)

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12.221 Field Geophysics

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  1. 12.221 Field Geophysics Instructors Tom Herring, tah@mit.edu; Brad Hager brad@chandler.mit.edu Web: http://www-gpsg.mit.edu/~tah/12.221 12.221 IAP Class 1

  2. Aims of IAP 2005 • Field camp location north of Blythe California near Vidal. Approximate location latitude 34.06 N, Longitude 245.46 E (-114.54 W) • Two main objectives • Relative motions of GPS monuments in the region • Development of sub-surface structure model based on gravity measurements 12.221 IAP Class 1

  3. Class Conduct • Course is pass/fail grading • Grade will be based on field camp participation and the final project/Oral presentation. • Group will generate a final report from camp and each member of the class will be responsible for specific parts of the report (details to be decided after return from camp). • Working as a team is acceptable but contributions of each member in the final report should be clearly specified. 12.221 IAP Class 1

  4. Items needed for camp • Valid picture ID (Drivers License or passport) • Tent, Sleeping bag (35 deg nighttime temperatures), ground sheet • Sturdy boots • Sturdy water bottle • Hat for sun protection • Flashlight (extra batteries) • Sun block, skin moisturizer • Field notebook, pens, calculator • Clothing for 7days (layering). Daytime temperatures will be in 60-70. • Laptop computer and/or camera (optional) • See Web page for complete list 12.221 IAP Class 1

  5. Flight Itinerary • Depart Logan Airport: United 525/605 6:00 AM, Friday Jan 7, to Palm Springs via Chicago. Arrive Palm Springs 12:07 PM. Drive directly to field camp. • Meet in parking lot between Biology (68) and Stata (32) at 4:00 am Friday morning • Return: United 6726/1216 8:29 AM Friday Jan 14, to Boston via Denver. Arrive Logan airport 6:13 pm 12.221 IAP Class 1

  6. Class schedule this week • Tues: 10:30 am 54-313 Introduction to Gravity • Wed: 10:30 am 54-320 Introduction to GPS • Reading list: Herring, Geodetic Applications of GPS, Proc. IEEE, 87, 92-110, 1999. McClusky et al., Present Day Kinematics of the ECSZ, Geophys. Res. Lett, 28, 3369-3372, 2001 http://www.scec.org • Thur: 10:30 am 54-313: Examine existing data in the region • Friday: Depart for field camp • Meet 10:30 am Thur Jan 20-Thur Jan 27 following camp. Room 54-320 except Tues Jan 25. Final oral presentations on Thur Jan 27. 12.221 IAP Class 1

  7. Topics to be covered • Applications of the global positioning system: We will use • “Kinematic” GPS to do ~10 mm positioning of a moving antenna (gravity) • “Static” GPS to do sub-mm positioning (tectonics) • Gravity measurements for inferring sub-surface characteristics • Modeling of gravity by analytical/numerical integration. • More details starting on Tuesday’s class. 12.221 IAP Class 1

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