The Call of Antarctica: Exploring and Protecting Earth's Coldest Continent by Leilani Raashida Henry

Author:Leilani Raashida Henry [Henry, Leilani Raashida]
Language: eng
Format: epub
Tags: Pollution, Albatross, Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), Petrel, Ocean Acidification, Science & Nature, James Cook, Terns, Landforms, African American History, Subglacial Lakes, Glaciers, Extreme Weather, Lichen, STEM, Whales, history, tourism, Satellite Imaging, Ocean Animals, Weather, Magnetic Field, Richard Evelyn Byrd Jr., Young Adults, Fossil Fuels, Little America Bases, Wildlife, Matthew Henson, IceCube Neutrino Observatory, US Research Stations, East & West Antarctica, Warming & Cooling Period, Environmental Science, Ernest Shackleton, Continents, Tardigrades, Mammals, Nacreous & Noctilucent Clouds, Scientific Expedition, Continental Drift, Satellite Imagery, Moss, Global Warming, Roald Amundsen, Leopard Seal, Jim Crow, Shag Birds, Women's History, South Pole, Environmental Conservation & Protection, Skuas, Geography, Ice Shelf, Atmosphere, Reference Elevation Map of Antarctica (REMA), Pangaea, Antarctica, Earth History, Adélie Penguin, Segregation, USS Bear, Ozone Hole, Microbes, James Clark Ross, Weddell Seal, Antarctic Strategic Plan for Biodiversity, Seaplanes, Volcanoes, Land Survey, Environmental Science & Ecosystems, International Geophysical Year, Sea Level Rise, Earth Tilt, Robert Falcon Scott, Snow Cruiser, Robert Peary, Habitats & Ecosystems, International Association of Antarctica Tour Operators (IAATO), Mapping, World War II, Earth Science, Ocean Currents, Radar, Nonfiction, Elephant Seal, Protocol on Environmental Protection, Ozone Layer, Mountain Ranges, Sea Life, Black History, US Navy, Antarctican Peninsula, Exploration & Discovery, Seismic Data, George Washington Gibbs Jr., Antarctica Treaty System, animals, James Weddell, Aurora Australis, Cetaceans, Gondwanaland, Artists, Greenhouse Effect, Sled Dogs, Sea Voyage, Ice Cores, Arctic, Birds, Invasive Species, Wind Chill Index, Algae, Emperor Penguin, Bedrock, Microplastics, USS North Star, Airplanes, Richard Cruzen, Marine Reserves, Young Adult Nonfiction
ISBN: 9781728411675
Google: VI80EAAAQBAJ
Publisher: Twenty-First Century Books ™
Published: 2021-10-05T23:33:45.934928+00:00

Mapping Antarctica

Ancient mapmakers imagined that Earth held a southern continent. They placed it on their maps although no one knew for sure whether the land existed. But in the nineteenth century, explorers such as James Weddell, Fabian Gottlieb von Bellingshausen, and James Ross confirmed that indeed a continent was there. They began mapping the coastline of Antarctica using their own observations and measurements. Inland expeditions filled in the map even further. When Byrd and other pilots flew over Antarctica, they filled in more blank areas by taking aerial photographs. But even as late at 1971, a map of Antarctica was mostly featureless and white—because that is what pilots saw and what aerial photographs could show.

In the late twentieth century, satellite images revolutionized the work of mapmakers. Radar maps and digital satellite images compiled of the entire continent began to reveal the structure of the ice sheet at a level of detail not seen before. Previously unknown mountains, canyons, and lakes beneath the ice sheet were revealed by subtle topography on the surface. In the first decade of this century, new maps from Landsat and other satellites used sophisticated processing to show Antarctica in exact true color in digital images with excellent detail. In the fall of 2018, scientists at the University of Minnesota and Ohio State University showed the world the most detailed map of Antarctica made to date: the Reference Elevation Model of Antarctica, or REMA. Created by combining nearly 190,000 satellite stereo images and processed to show the continent in 3D, the map shows surface features that are no bigger than a car. It reveals icy ripples, snow formations, melting glaciers, and cracking ice shelves. The map helps scientists better track the melting and flowing ice and other changes in Antarctica caused by rising global temperatures.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.