Today: The Mogi Source

• The Mogi model (spherical) via Segall

• The Yang model (ellipsoidal) via Feng and Newmann

• Example from proposed work on EGS at Newberry

• Tinker time for projects and Problem Set 5

Thursday, December 5, 13

The “Mogi” model

From Segall “Earthquake and Volcano Deformation” Chapter 7

simple even simpler

Thursday, December 5, 13

From Segall “Earthquake and Volcano Deformation” Chapter 7Thursday, December 5, 13

Ellipsoidal Source

Thursday, December 5, 13

Thursday, December 5, 13

Thursday, December 5, 13

EGS Demonstration Project: Newberry, OR

Thursday, December 5, 13

•Magmatic heat source from Newberry Caldera

Thursday, December 5, 13

0 1 2 3 4 5 6 7 8 9 10−3

−2.5

−2

−1.5

−1

−0.5

0

0.5

Horizontal Distance from Source (km)

Dis

plac

emen

t (m

m)

Expected Surface DisplacementRed=Horizontal, Blue=Vertical

Dashed=depth of Mogi point sourceDepth=8047 feet

Volume=20000000 gallons

Thursday, December 5, 13

0 1 2 3 4 5 6 7 8 9 100

2

4

6

8

10

12

14

16

Distance (km)

Dis

plac

emen

t (m

m)

Expected Surface DisplacementRed=Horizontal, Blue=Vertical

Dashed=depth of Mogi point sourceDepth=8047 feet

Volume=20000000 gallons

Thursday, December 5, 13