Welcome to the Class
On
The Atlantic Ocean Current
By…………………………………………….
Md. Abu Said
Lecturer in Geography
Chandpur Govt. College
Aims and targets
1. To identify the location of Atlantic ocean
currents
2. To know the overall situation of temperature
3. To show the direction of the currents
4. To know the importance of Atlantic currents
………What to discuss..........
1. Definition of ocean current
2. Types of ocean current
3. Elaborate discussion on Atlantic Ocean
Currents
4. Importance of the Atlantic currents
Ocean Current: Ocean current can be
defined as the movement of ocean
water from one place to another,
horizontally or vertically.
Types of Ocean current
(Temperature based)
Cold
Warm
Main Types of Ocean currents
(Location based)
1. Atlantic
2. Pacific
3. South Indian Oceanic
Current of Atlantic Ocean
S. Atlantic
A.
B.
1.
C.
2.
3.
4.
5.
North Atlantic Drift
Canary
Antarctic
West Greenland
Benguela
South Equatorial
Brasil
Folkland
Eq. Counter
N. Atlantic
1. The Gulf Stream
2. North Equatorial
3. Arctic
4. Labrador
5. Guinea
South Atlantic
currents: Located
at the south of the
equator.
1. Antarctic: Due to
the influence of
westerlies, a
current has been
created on the
south most part of
Atlantic. This has
been originated
from Antarctic and
moves toward
north-east as a
cold current.
2. Benguela:
Antarctic current is
divided into two
parts nearby the
Cape of Good
hope. Benguela is
the continuation of
the Antarctic
current through the
eastern coast of
Africa toward north
Cape of good hope
3. S. Equatorial: This
is the continuation
of the Benguela
current straight to
west parallel to the
equator, at the
south. This is a
warm current. This
is later on divided
into two parts. One
of these enters into
the Gulf of Mexico
through the
northern coast of
S. America.
Cape of good hope
4. Brasil: The second
part of the south
equatorial current
flows toward south
besides the coast
of Brasil. This is
known as the
Brasil current.
While moving
southward, this
warm current
becomes colder at
the southern most
part of its path.
Cape of good hope
5. Folkland: This is
the branch of the
Antarctic current
that flows besides
the Folkland
island, towards
north. This finds
Brasil current at its
path and loses
itself into Brasil
current.
Cape of good hope
North Atlantic: Located
at the north of the
equator.
1. The Gulf Stream:
Water of Mississippi
falls in the Gulf of
Mexico. The current,
with the huge
pressure of water,
flows toward northeast between the
narrow space of
Florida and Cuba.
This is known as the
Gulf Stream.
Cape of good hope
A. North Atlantic drift:
The branch of the
gulf stream that
flows toward
British island by
the influence of
westerlies is
known as the
North Atlantic drift.
It reaches to the
Arctic ocean. After
flowing a short, it
turns into the cold
current.
Cape of good hope
B. Canary Current: one
of the branches of
the gulf stream
after reaching the
coast of Portugal,
tends to move
south-ward nearby
the western coast
of Africa (Canary
island). This is a
cold current as this
comes from the
high latitude areas
Cape of good hope
C. West Greenland: one
of the branches of
the gulf stream
going northward,
turns to west
nearby the Iceland.
It enters to the
Arctic ocean
through Davis
channel.
Cape of good hope
2. N. Equatorial: The
continuation of the
Carnary current
toward the west
parallel to the
equator is called
the North
equatorial current.
This is divided into
two after getting
blockage at the
Caribbean island.
Southern part
mixes with the
south equatorial
current whereas
the northern part
mixes with the gulf
stream.
Cape of good hope
3. Arctic: Two currents
flow from the
Arctic ocean to
south through the
both sides of
Greenland are
combinedly known
as the Arctic
current. This is
originated because
of variation in
salinity of Arctic
and Atlantic.
Cape of good hope
4. Labrador: The
combined flow of
the Arctic currents
meet together at
the gulf of
Labrador and flows
southward as a
cold current. This
finally mixes with
the gulf stream.
Cape of good hope
Equatorial Counter
Current: This is the
current flowing
from west to east
between the North
and South
Equatorial current.
This is originated
because of the
barrier of Brasil
coast to the South
Equatorial current
as well as the
presence of
Doldrum (nearby
equator, the wind
movement is
almost zero).
Cape of good hope
5. Guinea: The Canary
and Equatorial
counter current
mixes together and
turns towards
south west to enter
Guinea gulf. This
combined current
is known as the
Guinea current.
This is a warm
current and mixes
with the Benguela
current.
Cape of good hope
What is the reason
behind the currents
to be warm or
cold????????????
Tropic of Cancer
S
Tropic of Capricorn
Cape of good hope
Importance of
Atlantic Ocean
Current:
1. Ocean route
between North
America and
Europe
2. Ocean route
between Western
Africa and South
America
3. The routes having
warm ocean
current remain
navigable yearround
Cape of good hope
Importance of
Atlantic Ocean
Current:
4. These have a great
impact on the
environment of
the nearby areas.
Nearby the warm
current, the
temperature
remains higher
and nearby the
colder currents,
the reverse
condition is
observed.
Summary
We shared the followings………….
1. Basic Idea about ocean currents
2. Detail about Atlantic ocean currents
3. Importance of this specially in large scale
trade with cheap rate of transportation
4. Reasons for being difference in currents
??????????
Should we
pollute the
environment? If
we pollute it, it
will betray with
us. Because it
has the ability to
damage all
including the
normal functions
of the ocean
water movement.