-
first determined
the world’s circumference by using
observations obtained while looking down a
well on the summer solstice. -
worked out a
method for determining latitudes and
using astronomical measurements
proposed that tides were a product of
lunar influences. -
established a marine observatory to
improve the Portuguese sailing endeavors and
conquered one of the greatest trades
problems-getting around the tip of Africa. -
Geographia is a discussion of the data and of the methods he used. As with the model of the solar system in the Almagest, Ptolemy put all this information into a grand scheme. Following Marinos, he assigned coordinates to all the places and geographic features he knew, in a grid that spanned the globe. Latitude was measured from the equator, as it is today,
-
circumnavigated
the globe through a passage
way at 52° S latitude now
called the Straights of
Magellan. -
Discovering Surface currents
and therefore in 1777 published
the first map of the Gulf
Stream. -
Cook discovered Hawaiian group in 1778 and
determined the outline of the worlds largest ocean
and the first person known to cross the Atlantic
circle. -
December 27, 1831 – Under
Captain Robert Fitzroy a 5
year trip surveyed the coast
line resulted in -
In 1853 established uniform methods of
making nautical and meteorological
observations at sea. -
First large scale voyage with the
purpose of increasing knowledge of the
distribution of life in the ocean and of
the chemical and physical properties of
the ocean. -
Technique that uses sound propagation to navigate, communicate with or detect other vessels.
-
is a spherical deep-sea submersible which is unpowered and is lowered into the ocean on a cable.
-
Phoenicians circumnavigated
Africa and sailed the North Atlantic as far
as European Coast and British Isle where
they were known to trade for tin which is
used in making bronze. -
Herodontus constructed a map of the
Mediterranean Sea in 490 BC. -
982 A.D. Eric the Red sailed westward from
Greenland and discovered Baffin Island.