lect 1 Flashcards
the study of the distribution of elements, isotopes, and compounds, in the oceans and the changes that occur
chemical oceanography
more focused on chemical reactions than on processes determining this distribution of substances in the ocean
marine chemistry
focused on the partitioning and cycling of elements and compounds between the living and nonliving parts of an ecosystem
marine biogeochemistry
marine biogeochemistry- how are fluxes depicted
a series of storage areas
each resivoir symbolized by a box
continuous transfer of materials
flow indicated by arrows pointing from source to sink
magnitude of exchange rates and sizes of resivoirs given
the first oceanographic expedition “challenger” happened when
1872-76
how long were the challenger stations
362
what are some insturments used in chemical oceanography
water sampler
rosette with CTD
sediment trap
what things are happening in modern oceanography
international research centres
international programs
submarine tech
satelites (GPS and platforms)
inc use of computers for modelling complex ocean processes (local and OGCMs)
deep ocean drilling
NOAA
national oceanic and atmospheric administration
submarines
ppol in them
cost to keep people
not safe
limitied in depth
AUV
no ppl
no tether or control
pre determined path
delay in info
ROV
no ppl
tether
controlled
limited in high current areas
satellites
have dedicated bio, phys, and geo sensors
GPS geoloctation
collect data from buoys, AUVs
ARGO floats steps
1., float is deployed
2. descends to DRIFTING DEPTH
3. drifts for 10 days
4. descends to PROFILING DEPTH (2k-6k m)
5. ASCENT: and measures essential ocean variables
6. transmit data
7. begin next cycle
what is a new technique used today
stable isotopes used to track biogeochemical processes today and in the past
