Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biological_Oceanography > ocean_geography > Flashcards

ocean_geography Flashcards

1
Q

name the five oceans

A

pacific
atlantic
indian

southern
arctic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is a a marginal sea?

A

water bodies , mor or less encloed by land masses;

adjactent to a continent connectet to the ocean on the surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

which are the three largest oceans?

A
  1. pacific
  2. atlantic
  3. indian
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the boundaries of the the pacific ocean?

A

in the west:australia, asia
east america
north: arctic ocean
south: southern ocean

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

of what ocean is the norwegian sea a part of?

A

atlantic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the boundaries of the atlantic ocean?

A

north artice ocean

south: pacicf and indian ocean
east. : eurasia and africa
west: america

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what are the boundaries of the norwegian sea?

A

north sea, greenland sea

barent seaa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how many deep basins has the norwegian sea, what is their name and how deep are,?

A

2
norwegian basin (southern basin) depth :4 km
lofoten basin (northern basin)
depth: 3,5 km

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how long is the norwegian sea shelf?

A

40-200 km

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

indian ocean, what are the boundaries?

A

north: asia
west: africa
eats: australia
south: soutern ocean

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how do oceanographers define the southern ocean?

A

ocean betw. polar front and antarctica

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how is the boundary of the arctic ocean defined by?

A

by the 10° C isotherm for July

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

which seas does the nordic sea include?

A

greenland
icelandic
norwegian
-sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

give an example for margina seas that are relatively open

A

north sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

give an example for margina seas that are relatively land locked

A

metiterranea sea , baltic sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

give an example for margina seas that are enirely land locked

A

saline seas, once were part of an ocean
e.g. caspian sea
dead sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

give an example for margina seas that are were lakes during early postglacial

A

baltic sea, black sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is the largest marginal sea?

A

coral sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

how is the evaporation/freswater supply ratio of the mediterranean sea?

A

evaporation&raquo_space; freshwater supply

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what effect has the specific fresevaporation/freswater supply ratio of the medit. sea on 1)the water mass sinking
2)the salinity content? of surface and bottom water?

A

surface water: high salinity

  • -> sinks down
  • -> bottom water also high salinity, high oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what are the distinct characterists of medit. sea bottom water?

A

high salinity
high oygen
-content

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

how works the circulation of the water body in the medite. ?

A

low salinity water from the atlantic ocean enters through the strait of gibraltar

  • -> heating and evaportaion
  • -> higher salinity
  • -> water sinks down = dense salty water
  • -> bottom water flows along the bottom of the strait of gibraltar into the atlantic ocean
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what is deppest trench and how deep is it? what is the deepest part of it?

A

mariana trench ,
deepest part

11 km

24
Q

what is an oceanic trench?

A

depression of the seafloor
narrow in width, but very long

= subduction zone

25
Q

how is a trench formed?

A

the heavier oceanic plate subducts beneath the lighter continental plate –> froming a trench

=subduction zone

26
Q

what is the deepest part of the deepest trench called like?

A

challenger deep

27
Q

name two trenches? (except the deepest trench)

A

philippine rench
peru chile trench
middle-america trench

28
Q

in which two zones is the ocean divided?

A

pelagic zone (water column)

benthic zone (sea floor)

29
Q

in which sub zones is the pelagic divided into? also define the depth range of those zone?

A

epipelagic 0-200 m
mesopelegic 200-2000 m
bathypelgagic 2000-4000 m
abyssopelagica 4000-6000

30
Q

in which sub zones is the pelagic divided into? also define the depth range of those zone?

A

epipelagic 0-200 m
mesopelegic 200-2000 m
bathypelgagic 2000-4000 m
abyssopelagica 4000-6000

31
Q

what is the name of the pelagic water body over the sublittoral zone

A

neritic zone

32
Q

in which sub zones is the benthis divided into? also define the depth range of those zone?

A

intertidal zone + sublittoral zonen 0-200m
bathyal zone 200-4.000 m
abyssal zone 4000-6000 m
hadal zone >6000 m

33
Q

in which zones is the subsea continet divided into?

sortiere diese zu den benthic zones zu

A

contintal shelf = sublittoral zone
continental slope = continental slope
abyssal plain = abyssal zone
trench= hadal zone

34
Q

definition of: continental shelfs

A

submerged, continental landmass extending from the continent into the ocean
–> resulting in a shallow water area

35
Q

what is the name of the pelagic water body, that is NOT pver the sublittoral zone?

A

oceanic zone

36
Q

are continental shefs eher im norden oder im süden ausgerägt?

A

im norden und in in ther antarctis, sowie ozenaninen udn australien

37
Q

what are the largest shelfs?

3

A
  • siberian shelf
  • south asian/north australian shelf
  • atlantic shelf of argentina
38
Q

what is the average shelf width?

A

ca. 80 km

39
Q

until what depth goes an shelf?

A

200 m

40
Q

what is the average slope gradient in the norwegian sea?

A

≈ 4°

41
Q

where is the widest part of the contintal slope in the norwegian sea?

A

møre/ trøndelag coast.

42
Q

what is the defiition of a continental margin?

A

transition betw. deep sea and shelf

= continental shelf + continental slope + continental rise

43
Q

what is the depth range of abyssal plains?

A

3500 -6000 m depth

44
Q

what seperated the differnet abbysal plains from each other?

A

-submarine mountain ranges (ridges)

mountain range = gebirgszug

45
Q

what is the world largest submarine range?

name one more subm. range !

A

mid atlantic ridge

another one: azores

46
Q

what seperates the deep ocean basins from each other?

A

ridges, rises, continents

47
Q

in what year was the bottom of the chalenegr deep first reached?

A

1960

48
Q

definition of estuaries

A

semi coles coastal ater bodies, with free connection to the open sea
- diluted with freshweater from one or more river runoffs

49
Q

is a fjoord and a lagoon an estuary?

A

yes

50
Q

are all estuaries fords?

A

no

51
Q

defnition of a fjord

A

undersea valley fromed/carved out by glaciers with at least one or more sill; usually U-profile

52
Q

in what areas do fjords exist?

A

areas of serious ice age

norway, svalbar, greenland, alaska, scottland

53
Q

what is a sill?

A

subsea barrier, which almost reaches the water surface ≈ underwater mountain

54
Q

what are the three longest fjords?

A

scoresby sund
sognefjord (norway)
hardangerfjord (norway)

55
Q

what is a typical water circulation pattern/currents of fjords?

A

inner part of of a fjord, less movement, because water has to go over the sills
water falls into deep baisisns

56
Q

trondheimsfjord:
- average depth of the outer and inner fjord
- maimum depth

A

inner: 105 m
outer 212 m

max. depth: 6 km

Biological_Oceanography (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions