Term
| What can isotopes tell us? |
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Definition
Isotopes can provide clues
about the chemical/physical
state of the ocean in
times past |
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Term
| why is Isotope labeling experiments useful? |
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Definition
because studying feeding habits and
tracing biological transformations. |
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Term
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Definition
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Term
| Heavy isotope tends to stay in the phase where it is most tightly bound |
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Definition
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Term
| Source and cycling of carbon |
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Definition
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Term
| Trophic levels of food webs |
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Definition
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Term
| Tracer of water mass source |
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Definition
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Term
| Temperature of formation of CaCO3 |
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Definition
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Term
Changes in sea level due to storage
of water on land (as ice)- Glacial
cycles |
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Definition
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Term
| Bonds formed by the ________ isotope are more readily broken than bonds involving the ________ isotope |
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Definition
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Term
| The equilibrium fractionation of isotopes is always temperature dependent. |
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Definition
| Oxygen isotopes in paleothermometry |
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Term
| What is Rayleigh Distillation? |
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Definition
| When water evaporates from the surface ocean |
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Term
the isotopic fractionation between the liquid the vapor becomes more pronounced and the remaining
vapor is very ________. |
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Definition
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Term
A progressive enrichment in δ15N and
δ13C is also observed as you move up through trophic levels |
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Definition
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Term
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Definition
| Size distribution is a continuum, with the most particles at the smallest sizes. |
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Term
|
Definition
| you can use Pumps, small particles (< 70 µm) |
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Term
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Definition
| Traps, collect bulk sinking material at different depths |
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Term
| Carbon flux __________ with depth due to decomposition |
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Definition
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Term
| Mass flux peaked in March after the spring bloom and rapidly decreased with time. Summer fluxes were much lower |
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Definition
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Term
|
Definition
| Percent of Organic Carbon |
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Term
| what is the major control on the acidity of seawater? |
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Definition
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Term
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Definition
| are greater than the large seasonal |
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Term
| How do we estimate the extent of anthropogenic CO2 in the ocean? |
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Definition
- Air-sea gas exchange (solubility pump)
- Photosynthesis, respiration & remineralization (soft-tissue pump)
- Formation & dissolution of particulate carbonate (carbonate pump) |
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Term
| How do we estimate the extent of anthropogenic CO2 in the ocean using d13C ? |
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Definition
-the concentration of atmospheric CO2,
changes in the...
-the d13C of atmospheric CO2,
-the d13C value of DIC in the ocean. |
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Term
| If CO2 dissolved in seawater without reacting, ~__% would remain in the atmosphere. Instead only ~ __% does. |
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Definition
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Term
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Definition
| the thermodynamic condition of seawater that describes the degree of supersaturation or undersaturation with respect to the particular phase of the CaCO3 mineral |
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Term
| What are Some carbonate organisms? |
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Definition
| Coral, caccolithaphorids, foraminifer, etc. |
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Term
| What are Coccolithophores? |
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Definition
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Term
| Coral calcification rates may be reduced by __% - __% |
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Definition
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Term
| What will decreasing pH do in the ocean? |
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Definition
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Term
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Definition
| Reasonably Achievable Emission Reductions |
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Term
| Redfield ratio(modified RKR) |
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Definition
P : N : C = 1 : 16 : 106
138O2+(CH2O)106(NH3)16(H3PO4)-->16NO3-+106CO2+1PO4-3+H2O |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Particulate organic carbon |
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Term
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Definition
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Term
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Definition
| Nucleus emits 4He nucleus: mass decreases by 4, atomic number decreases by 2 |
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Term
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Definition
| Neutron converted to proton with emission of an electron: mass unchanged, atomic number increases by 1 |
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Term
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Definition
| Electromagnetic radiation emitted as nucleus falls into lower energy state: no change in mass, generally accompanies other decays |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Arrhenius definition (traditional) |
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Definition
Acid: A substance that can produce H+ions
Bases: A substance that can produce OH-ions |
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Term
| Brønsted–Lowry difinition |
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Definition
Acid: proton donor
Base: proton acceptor |
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Term
|
Definition
Acid: (Lone electron pair acceptor)
Base: (Lone electron pair donor) |
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