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Geophysics Internet Resources


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Tunnel Tiltmeters part of SERC Web Resource Collection

This website provides an overview of how tiltmeters function to help scientists detect subtle deformation of the Earths crust such as occurs from plate tectonic movements and volcanic deformation. ...

Google Earth Plate Tectonics File (.kmz) part of SERC Web Resource Collection

This Google Earth .kmz file contains a number of data sets that can be used to help students learn about plate tectonics. These include: earthquake epicenters, plate boundaries, plate motion vectors, ...

All About GPS - Trimble Tutorial part of SERC Web Resource Collection

GPS is a complex technology but understanding it can be quite easy if you take it one step at a time. This tutorial is designed to give you a good basic understanding of the principles behind GPS ...

How does GPS work? part of SERC Web Resource Collection

This document provides a quick explanation of how GPS works, including: (1) errors that need to be considered; (2) how GPS is applied to studying plate tectonics and fault movement; and (3) different ...

Elevation correction and the geoid tutorial part of SERC Web Resource Collection

The Earth is not a perfect sphere, but is instead more like a slightly squashed sphere called an ellipsoid. Because of this, GPS receivers must use a correction model (called a geoid) to calculate ...

The geoid and receiver measurements tutorial part of SERC Web Resource Collection

This web page explains how differences in the gravity at different places on Earth requires GPS receivers use additional corrections to find the true elevation of places on Earth's surface. The ...

Selective availability and the GPS receiver tutorial part of SERC Web Resource Collection

This website explains how the process of selective availability is used by the USA government to limit the accuracy of locations determined by GPS receivers.

InSAR: What it is and why you should care part of SERC Web Resource Collection

Provides an overview of what Interferometric Synthetic Aperture Radar (InSAR) is and how it is used to measure surface motion for a variety of geoscience fields. Based on an article originally ...

Recent Advances in Mars Tectonics part of SERC Web Resource Collection

This short article from the Jet Propulsion Laboratory features a pre-plate tectonic overview of the tectonic features and processes on Mars. The summary discusses how advances in knowledge expected ...

Corrections of the Indian gauge data used for early assessments of the great 26 December 2004 earthquake part of SERC Web Resource Collection

This resource is an abstract. This study re-evaluates slip velocity over the region of the December 26, 2004 Sumatra-Andaman earthquake. Using new data, the authors found that a mixed mode of slip ...


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