Geophysics: A Very Short Introduction

Geophysics: A Very Short Introduction

Geophysics is the physics of the Earth. Central to the Earth Sciences today, it encompasses areas such as seismology, volcanism, plate tectonics, gravitational anomalies, and the Earth's magnetic field (present and past, as captured in rocks), all of which give clues to both the structure and the working of the Earth.

In this Very Short Introduction, William Lowrie describes the internal and external processes that affect the planet, as well as the principles and methods of geophysics used to investigate them. He explains how analysis of the seismic waves produced in earthquakes reveals the internal structure of the Earth. Geophysicists have established that the greatest source of energy powering geological processes is the Earth's internal heat. Deep inside the Earth, the temperature is high enough to produce a fluid outer core of molten iron. It is the motion in this molten iron layer that produces the Earth's magnetic field, which shields the planet against harmful radiation from the Sun and outer space, and thus makes the planet habitable. Lowrie describes how the magnetic field also magnetizes rocks during their formation, leaving a permanent record of the ancient field and its direction that geophysicists have learned to use to interpret past motions of the continents and tectonic plates. From analyzes of Earth's deepest interior to measurements made from Earth-orbiting satellites, Lowrie shows how geophysical exploration is vitally important in the search for mineral resources, and emphasizes our need to understand the history of our planet and the processes that govern its continuing evolution.

Title:Geophysics: A Very Short Introduction
Edition Language:English
ISBN:9780198792956
Format Type:

About William Lowrie


    Geophysics: A Very Short Introduction Reviews

  • Arno Mosikyan

    Heat flow varies greatly over the Earth’s surface depending on the local geology and tectonic situation. The estimated average heat flow is 92 mW/m2. Multiplying this value by the Earth’s surface ...

  • Lee

    A short, highly technical introduction to geophysics, this reader felt sometimes overwhelmed by the detail packed in such a short punch, but enjoyed learning the basics, which I could comprehend, and ...

  • Usfromdk

    An excellent introduction to the topic, with high-level yet satisfactorily detailed coverage of many areas of interest....