or what do we use to study the marine world?. physical properties secchi disk measures...
TRANSCRIPT
Or What do we use to study the marine world?
Physical PropertiesSecchi Disk
measures turbidity/visibility
turbidity - cloudiness due to the amount of suspended matter in the water (soil, sediments, sewage, and plankton)Clear - low turbidityCloudy - high turbidity
Biological PropertiesDip Net
retrieves a variety of samples from the water
Physical PropertiesHydrometer measures density & temperature, used to find salinity
HYDROMETER
Physical PropertiesNiskin / Nansen Bottle
obtains water samples at a variety of depths
NISKIN BOTTLE
Biological PropertiesSediment Screen
used to screen sediments for macro invertebrates
Physical PropertiesShipek/Peterson Grab
take a sample of the ocean bottoms
Physical Properties
CTD measures
conductivity, temperature & depth
GPSProvide radio-
navigation system giving every place on Earth an address
Biological PropertiesPlankton Net
net towed or dipped to gather plankton samples
Research VesselsResearch
submersibleCan carry
passengersReach depths
of 14,764 ft.Maneuverable
arms, 3 portholes
ALVIN
Physical PropertiesThermometer
measures & records temperature at a particular depth
Research VesselsTrieste – first bathyscaphe to
descend 35,600 ft to the bottom of the Mariana Trench