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History of Aquatic Science
This unit will give an introduction to the history of oceanic exploration and the major events & discoveries that shaped the course of Aquatic Science. On the following slides, the
green sections are the most important.
Underline words = vocabulary!
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Vessel MatchingMatch the
items below to the pictures to the right. ROVSatelliteSubmarineBuoySonar
AB
C D
E
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Aquatic Science What is Aquatic Science?
The study of all water environments, and the plants, animals, and organisms that live in them.
http://habitatnews.nus.edu.sg/news/pulauhantu/images/LIT0007%20blog.jpg
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BackgroundAbout ¾ of our Earth
is water; without water, life on Earth as we know it would not exist.
The ocean is one of our last frontiers – the last places to discover.
Since the beginning of time human kind has required water for survival.
http://watserv1.uwaterloo.ca/~saibaba/Boy%20Drinking%20Water.jpg
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The OceanThrough the study of the world’s oceans,
we:Enjoy recreationExplore aquatic animals & plantsFind food Get our weather systemsLearn the history of the planetMine for minerals, oil & building materialsTrade between countriesTransport goods and people
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Areas of Study in Aquatic Science
Physical: currents, tides, waves, pressure, temperature, depth, density, as relating to weather phenomenon
Geological: history of the Earth, seafloor features, sediments, changes over time
Chemical: evolution and composition of seawater, its influences on animal and plant life, and impact of water pollution on the environment
Biological: plants, animals and their ecosystems (life cycles, food chains, and environments)
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OceanographyWhat is
oceanography? A multiscience field
encompassing geology, geophysics, chemistry, physics, meteorology, and biology as they pertain to marine ecosystems.
http://library.humboldt.edu/~rls/kelp.jpg
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Marine Biology
Marine Biology – the study of marine organisms, their behaviors, and interactions with the environment.
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AquacultureAquaculture – the management of
fisheries and hatcheries, where fish eggs are incubated and hatched.
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Setting up Your Timeline
Take a sheet of legal sized paper. Fold the sheet along the Y axis (skinny)
and cut along the fold. Tape the two ends of the paper together
to make one long strip for the timeline. Use the meter stick/ruler to draw a line
down the center of the paper. Create a key in the lower left hand corner:
1 cm = 100 years
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Egyptian Technology
The Egyptians established sea trade throughout the Indian Ocean as early as 2300 B.C.
Ca 1938 - 1756 B.C. built the canal, the Isthmus of Suez, to navigate ships across land.
It operated until 775 A.D.
http://search.eb.com.ezproxy.uhd.edu/eb/article-22787
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The Phoenicia
nsPhoenicians: (from the Middle East) Sailed around Africa in 590 B.C.
http://search.eb.com.ezproxy.uhd.edu/eb/art-2116/Phoenician-colonization-in-the-Mediterranean
A stone carving from the 1st century AD shows the kind of ship that the Phoenicians used on the Mediterranean Sea.The Granger Collection, New York Image
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The GreeksHerodotus (a Greek): published accurate map
(see below) of Mediterranean region, ca 450 B.C.Greeks: Developed trade routes throughout the
Mediterranean and expanded their empire under Alexander the Great, 336 B.C.
http://www.henry-davis.com/MAPS/Ancientimages/109.JPEG
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Amazing Math!200 B.C. – the
Greek Eratosthenes mathematically calculated the circumference of the Earth to be 40,000 km.
It actually is 40,032 km.
2,200 years ago his math was good enough to be off only 32 km!
Eratosthenes knew that at noon on the summer solstice the Sun is directly overhead at Syene (a city)….He also knew the distance between Syene and Alexandria (another city), which, combined with his measurement of the solar angle a between the Sun and the vertical, enabled him to calculate Earth's circumference.
From Encyclopædia Britannica, Inc.
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The Arabs
ca 200 B.C Islamic and Arab Merchants: Experienced sailors ; traded throughout the Mediterranean and Indian Oceans.
They are believed to have invented the lateen sail, the triangular sail important in early navigation.
http://search.eb.com
.ezproxy.uhd.edu/eb/art-12539/A-
lateen-rigged-ship-used-by-Arab-merchants
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In the Middle Ages900 A.D. The Vikings crossed the North
Atlantic to colonize Iceland, Greenland, and Newfoundland using the North Star to determine latitude.
Exhumed Viking ship; Viking Ship Museum, Oslo, Norway. Image
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15th and 16th Centuries
Chinese: Sailed to influence and impress their neighbors.
1492 Columbus: Sailing for Spain, sailed the Atlantic and “discovered” the America’s.
1497 Vasco da Gama: Sailing for Portugal, sailed around Africa from Portugal to India to establish trade routes.
Europeans searched for the Northwest passage through northern Canada to trade with Asia; explored the Artic.
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Around the World in…1519 - Portuguese
explorer Ferdinand Magellan was the 1st European expedition to circumnavigate (travel all around) the world.
237 men began the voyage; 18 returned.
Magellan actually died before the journey was finished, but his crew returned in 1522. Trip
http://www.solarnavigator.net/history/explorers_history/ferdinand_magellan_charcoal_fur_robe.jpg
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Benjamin Franklin 1762- The
American Ben Franklin created a chart of the Gulf Stream.
The Gulf Stream gives the US its warm climate, bringing warm water north from the equator.
http://oceanexplorer.noaa.gov/library/readings/hires/gulf_stream_map.jpg
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Harrison & Cook
1728 - Device invented by John Harrison (a carpenter) who was paid 20,000 pounds by the British government; a chronometer a device that calculates longitude.
1768 - The English explorer Captain James Cook made 3 voyages to chart the Pacific Ocean.
He was the first to use a chronometer for navigation.
http://www.captaincookwhitby.co.uk/captainjamescookportrait.jpg
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Charles DarwinIn 1831 Charles
Darwin took his voyage on the ship the HMS Beagle which led to the origin of species and the modern theories of evolution.
http://uk.gizmodo.com/charles_darwin_l.jpg
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Matthew MauryU.S. Navy’s Lt.
Matthew Maury, called the Father of Modern Oceanography, made charts and sailing directions through data collection and wrote the first book of oceanography in 1855.
Monument named him “Pathfinder of the Seas”. (Richmond, VA)
http://www.18thmass.com/blog/media/2/20070417-Richmond%20-%20Matthew%20Maury.jpg
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The ChallengerFrom 1872 to
1876, the ship HMS Challenger Expedition led by Sir Charles Wyville Thomson gathered more data in its time than all other data to date.It was this voyage that discovered the
world’s deepest ocean trench, the Marianas Trench, now sometimes called the Challenger Deep.
http://www.zamboanga.com/history/histor8.jpg
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The Marianas Trench (~8185 m or 26,850 ft) in the Pacific Ocean about 200 miles SW of Guam.
The map below shows the route of HMS Challenger (in red); the expedition lasted 1,000 days and covered more than 68,000 nautical miles.
http://oceanexplorer.noaa.gov/explorations/03mountains/background/challenger/media/route.html
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20th Century 1898 – The world
wars were the catalyst for US oceanographic research; invention of the 1st gas engine/battery powered submarine (John Holland) bought by US government in 1900. Development of technology including electronic equipment, deep sea drilling programs, (1916) SONAR, use of GPS (global positioning system) and satellites.
http://oceanexplorer.noaa.gov/explorations/05arctic/background/plan/media/global_explorer_rov_600.jpg
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The Meteor Expedition: mapped the ocean floor and features.
1925-1927 - The German Meteor expedition systematically surveys the South Atlantic with echo-sounding equipment and other oceanographic instruments.
The Meteor
http://oceanexplorer.noaa.gov/history/quotes/tech/media/echo_600.jpg
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On January 23, 1960, the bathyscaph (small submarine) Trieste reached the greatest oceanic depth existing on our planet.
Don Walsh and Jacques Picard (US navy) piloted the Trieste to the deepest part of the trench (35,797ft > 6.5miles) .
http://www.strange-mecha.com/ship/Bathyscaphe/trieste.jpg
The Trieste
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".... I saw a wonderful thing. Lying on the bottom just beneath us was some type of flatfish… Even as I saw him, his two round eyes on top of his head spied us … Why should he have eyes? Merely to see phosphorescence?...Here, in an instant, was the answer that biologists had asked for the decades. Could life exist in the greatest depths of the ocean? It could!”
- J. Picard
http://www.travel-dive.com/images/frogfish-hairball.jpg
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Alvin Designed by
Woods Hole Oceanographic Institute and built in 1962, Alvin has traveled around the world completing 4,162 dives.
Alvin has mechanical arms and in 1966 helped to locate a H-bomb that was lost in the Mediterranean Sea.
In 1979, Alvin and its crew discovered black smokers on the sea floor.
http://www.oar.noaa.gov/spotlite/archive/images/oceandumping_alvin.jpg
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The Glomar Challenger
1968 – The Glomar Challenger, a drilling vessel that proved seafloor spreading and changes in the earth’s climate by taking core samples from the sea floor.
http://www.pixelgraphicsinc.com/images/Glomar.jpg
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View from Space1985 – JASON, a satellite found and
documented the wreck of the Titanic.
http://topex-www.jpl.nasa.gov/mission/images/OSTM-200707.jpg
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The Japanese1989 - Japan launched the Shinkai 6500 which
can carry a crew without a tether (rope) up to 21,414 ft deep into the ocean (a world record).
http://www.sstg.org/images/shinkai.jpg
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21st Century In 2006, a Chinese mineral company
(COMRA) designed a craft to reach 23,000 ft.
http://interridge.whoi.edu/files/interridge/comra_celebrate.png
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How do we study the ocean?
Types of Research Vessels: Submersibles – small underwater vehicles ROV – remotely operated vehicle Bathysphere – is lowered by a cable from a
ship Drilling ships – which take sediment cores Floating and Fixed platforms (FLIP –
floating instrument platform) to gather data like temperature, salinity, density, and weather patterns
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Other Research Instruments
AirplanesSatellites –
SEASAT: 1st satellite dedicated to ocean studies
EchosoundingUnderwater
camerasSide scan
sonar – great for sunken ships
http://www.noaanews.noaa.gov/stories2005/images/side-scan-sonar-rude2.jpg
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In Conclusio
n
The ocean represents the Earth’s last frontier for exploration and the key to understanding the future of our planet.
The human race depends on the life and sustainability of the ocean for economic, biological, and environmental stability.
The world of Aquatic science is ever reaching for new discoveries in this blue realm.
http://www.cliffshade.com/colorado/images/earth_west.jpg