Links

Given below are some links that I have found very useful in my studies.

Pauls Online Notes - A good reference on Calculus, Differential Equations and Linear Algebra

Math Insight - great explanations on Vector Calculus and multivariate calculus

Seafriends  - some good pages on Oceanography

Geology.com - everything about Geology

Geophysical Exploration - introductory modules on Gravity, Resistivity, Magnetic  and Seismic geophysical methods.

USGS Earthquake hazards program - real time information on earthquakes around the world.

Stat Trek - A useful reference on Statistics.

Titrations.info - Contains information about titrations used in analytical chemistry.