south lake tahoe: magnetic surveying
DESCRIPTION
South Lake Tahoe: Magnetic Surveying. Erica Romero and Caitlin Swale. Goal. To locate the West Tahoe fault Using magnetics data to locate anomalies Scintrex Magnetometer iPhone Crossbow G ain more information about the fault-anomalies below the surface - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/1.jpg)
South Lake Tahoe: Magnetic Surveying
Erica Romero and Caitlin Swale
![Page 2: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/2.jpg)
Goal• To locate the West Tahoe fault • Using magnetics data to locate anomalies• Scintrex Magnetometer• iPhone Crossbow
• Gain more information about the fault-anomalies below the surface• To asses the hazard from an earthquake in the Tahoe Keys area
![Page 3: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/3.jpg)
Results• Excel plots• Models and Cross sections
(Burger)• Line 1• Line 2• Line 3• Line 4• Line 5
• Crossbow data• GoogleEarth vs. LIDAR
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GoogleEarth vs. LIDAR
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GoogleEarth vs. LIDAR
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GoogleEarth vs. LIDAR
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Where the original PowerPoint starts…
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Overview
• Introduction•Methods• The Equipment• Data Processing
• Results• Conclusion
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Introduction• Location• Goal• Previous Work• Proposed Lines
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Location
• South Lake Tahoe, off of Hwy. 50
![Page 11: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/11.jpg)
Goal• To locate the West Tahoe fault
• Using magnetics data to locate anomalies• Scintrex Magnetometer• iPhone Crossbow
• Gain more information about the fault• To asses the hazard from an earthquake in the Tahoe Keys area
![Page 12: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/12.jpg)
Previous Work
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Proposed Lines
![Page 14: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/14.jpg)
Methods- The Equipment
• Scintrex Magnetometer• Two Components (Base
Station and Rover)
• The Base Station• Readings every 30
seconds• Set up in a cooler to
protect it • Same location both days
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The Rover
• Readings taken every ~10 m
• 3 readings taken at each stop, then averaged
• Sensor attached to a staff that must always be orientated towards the north
• The Tahoe sites were accessed by skiing and snowshoeing
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Data Processing• GeoSoft• Attempted to plot the magnetic lines and anomalies into
the software; however, the program would not recognize the coordinates, so the program was abandoned.
• Excel• Successfully managed to plot the magnetic readings versus
latitude and longitude• Able to produce two graphs that show a magnetic
anomalies• Able to process the iPhone’s Crossbow data
• Burger Software• Able to successfully plot the magnetic anomalies shapes to
the data
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Results• Excel plots• Models and Cross sections
(Burger)• Line 1• Line 2• Line 3• Line 4• Line 5
• Crossbow data• GoogleEarth vs. LIDAR
![Page 18: South Lake Tahoe: Magnetic Surveying](https://reader035.vdocuments.mx/reader035/viewer/2022062315/568166a9550346895dda9f2b/html5/thumbnails/18.jpg)
Crossbow Data
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GoogleEarth vs. LIDAR
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GoogleEarth vs. LIDAR
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GoogleEarth vs. LIDAR
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Conclusions
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Questions?