Blue Machine

How the Ocean Works

416 pages

English language

Published July 1, 2023 by Norton & Company, Incorporated, W. W., W. W. Norton & Company.

ISBN:
978-1-324-00671-8
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5 stars (2 reviews)

A scientist’s exploration of the "ocean engine"—the physics behind the ocean’s systems—and why it matters.

All of Earth’s oceans, from the equator to the poles, are a single engine powered by sunlight, driving huge flows of energy, water, life, and raw materials. In The Blue Machine, physicist and oceanographer Helen Czerski illustrates the mechanisms behind this defining feature of our planet, voyaging from the depths of the ocean floor to tropical coral reefs, estuaries that feed into shallow coastal seas, and Arctic ice floes.

Through stories of history, culture, and animals, she explains how water temperature, salinity, gravity, and the movement of Earth’s tectonic plates all interact in a complex dance, supporting life at the smallest scale—plankton—and the largest—giant sea turtles, whales, humankind. From the ancient Polynesians who navigated the Pacific by reading the waves, to permanent residents of the deep such as the Greenland shark that can live for …

4 editions

A wonderful book about the machine the is the world's oceans.

5 stars

An excellent book about a global machine that people don't often think about: the global ocean. A machine takes in energy and does work, and the author shows how the ocean does that. The ocean takes in the energy of the sun, stores it mainly as heat, and uses it to move water in great currents all over the world. This affects how organisms live, for those at the surface to those living in the depths.

The book starts with showing how the machine works physically. Light from the sun heats the surface, causing evaporation and currents to form as cold water moves in to replace the lost water. The earth's rotation swirls the currents as they move north or south, which are further affected by land masses in their path. The author goes from the equator to the poles, showing how the workings of the machine affect the local …

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