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Results 1 - 10 of 28 matches

How Does Surface Deformation at an Active Volcano Relate to Pressure and Volume Change in the Magma Chamber?
Module by Peter LaFemina, Penn State, State College, PA. This cover page by Ali Furmall, University of South Florida, now at University of Oregon.
SSAC Physical Volcanology module. Students build a spreadsheet to examine and apply the Mogi model for horizontal and vertical surface displacement vs. depth and pressure conditions in the magma chamber.

Bubbles in Magmas
Module by Chuck Connor, University of South Florida, Tampa. This cover page by Ali Furmall, USF, now at U. Oregon.
SSAC Physical Volcanology module. Students build a spreadsheet and apply the ideal gas law to model the velocity of a bubble rising in a viscous magma.

How Do We Estimate Magma Viscosity?
chuck connor, University of South Florida-St. Petersburg
SSAC Physical Volcanology module. Students build a spreadsheet to examine how magma viscosity varies with temperature, fraction of crystals, and water content using the non-Arrhenian VFT model.

What is the Volume of the 1992 Eruption of Cerro Negro Volcano, Nicaragua?
chuck connor, University of South Florida-St. Petersburg
SSAC Physical Volcanology module. Students build a spreadsheet to calculate the volume a tephra deposit using an exponential-thinning model.

Porosity and Permeability of Magmas
chuck connor, University of South Florida-St. Petersburg
SSAC Physical Volcanology module. Students build a spreadsheet for an iterative calculation to find volume of bubbles and hence porosity, permeability and gas escape as a function of depth.

What is the Volume of a Debris Flow?
chuck connor, University of South Florida-St. Petersburg
SSAC Physical Volcanology module. Students build a spreadsheet to estimate the volume of volcanic deposits using map, thickness and high-water mark data from the 2005 Panabaj debris flow (Guatemala).

Back-of-the-Envelope Calculations: Weight of Gold
Barb Tewksbury, Hamilton College
Question Let's suppose that you have a shoe box full of water (the box is waterproof, of course). The shoe box weighs about 9 kg (19.8 pounds). Suppose you emptied the box and filled it completely with rock ...

The Floating Lithosphere - Isostasy
Len Vacher, Dept of Geology, University of South Florida
Students are asked to numerically and then analytically determine the relations governing the depth of compensation.

Geologic Time Calculations
Francisco San Juan, Elizabeth City State University
Radiometric age determination using parent/daughter composition and a radiometric decay curve.

The Floating Lithosphere - Eureka!
Len Vacher, Dept of Geology, University of South Florida
In this module, students examine Archimede's Principle in general and as it applies to Isostacy.