By Mark Monmonier
Within the subsequent century, sea degrees are expected to upward thrust at remarkable premiums, inflicting flooding all over the world, from the islands of Malaysia and the canals of Venice to the coasts of Florida and California. those emerging water degrees pose severe demanding situations to all elements of coastal existence—chiefly monetary, residential, and environmental—as good as to the cartographic definition and mapping of coasts. it's this side of coastal lifestyles that Mark Monmonier tackles in Coast traces. atmosphere sail on a trip throughout moving landscapes, cartographic know-how, and weather switch, Monmonier unearths that coastlines are as a lot a collection of principles, assumptions, and societal ideals as they're stable black traces on maps.Whether for crusing charts or estate maps, Monmonier indicates, coastlines problem mapmakers to seize on paper a hugely abnormal land-water boundary perturbed by means of tides and storms and intricate through rocks, wrecks, and shoals. Coast strains is peppered with fascinating anecdotes concerning the complex attempt to expunge fictitious islands from nautical charts, the difficult size of a coastline’s size, and the contentious notions of beachfront estate and public access.Combing maritime heritage and the background of expertise, Coast strains charts the historic development from offshore sketches to satellite tv for pc photographs and explores the societal impression of coastal cartography on every little thing from international warming to native land safety. Returning to the shape of his celebrated Air obvious, Monmonier ably renders the subject of coastal cartography available to either normal readers and historians of technological know-how, know-how, and maritime stories. within the post-Katrina period, while the map of whole areas could be redrawn by way of a unmarried ordinary occasion, the problems he increases are extra very important than ever.
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Additional info for Coast Lines: How Mapmakers Frame the World and Chart Environmental Change
This first peak was higher partly because the moon was on the same side of the earth as the tide station and partly because the moon was also north of the equator. 2. An exaggerated tidal envelope illustrates how a moon above the plane of the equator yields noticeably different water levels for successive high tides at Springmaid Pier, South Carolina. equator on a given day is significant because lunar gravitation is greatest at the point directly below the moon. The physics is easier to understand if you envision a worldwide tidal envelope with an elliptical profile pulled outward toward the moon by gravity and away from the moon on the opposite side of the earth by centrifugal force (fig.
The greatest discrepancy occurs in the southwestern part of the map, which shows an area glimpsed in the distance but not visited. It sounds trite, but being there and taking good N EW WORLDS AN D FICTITIOUS ISL AN DS 37 notes almost always yields a more reliable coastline than looking from afar, guessing, or depending on vague, unconfi rmed theory. 36 Latitude, defined as a place’s angular distance north or south of the equator, could be determined with an astrolabe or quadrant, a device for measuring a celestial body’s angle of elevation above the horizon.
The 1941–42 T-sheet (fig. 5, right), based on an aerial survey and a subsequent field check, shows a much-diminished Little Crow Island, with a peak elevation ten feet lower than the highest point on Crow Island and two feet below the high point on its more seaward competitor. Careful comparison of the two maps reveals other changes in the local shoreline, at least partly the result of eight decades of wave action and rising seas. Also apparent are the hamlet near Five Islands Harbor and the appearance of summer homes on Malden Island, where elevations reach thirty feet.
Coast Lines: How Mapmakers Frame the World and Chart Environmental Change by Mark Monmonier
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