What type of water has the longest residence time?
Ice caps have the longest residence times, with residence times of up to 400 000 years recorded in an ice core from Vostok, Antarctica.
What is the residence time of a water molecule?
residence time: Tr = V/I (T), a measure of the average time a molecule of water spends in a reservoir. The residence time defined for steady-state systems is equal to the reservoir volume divided by the inflow or outflow rate. residence times of water in the compartments of the hydrologic cycle (Table 1.1).
Which reservoirs would a single water molecule be expected to have the longest residence time?
Deep groundwater can stay as long as 10,000 years while water in glaciers can be stored up to 100 years and water in oceans can stay as long as 3,000 years. Water in the atmosphere is the fastest reservoir and water can stay up to 9 days.
What has longer residence time quizlet?
Residence time measures how long a single molecule of water stays in a water source. The slower the water source exchanges water with other sources, the longer the residence time. Thus, the slow-moving groundwater source will have the longest residence time because groundwater must flow into another source.
In which location does a water molecule have the longest residence time quizlet?
The largest store (oceans) have the longest residence time for water molecules. The atmospheric store is the smallest so it has the shortest residence time.
What water reservoir has the shortest residence time?
in the atmosphere The residence time for water in the atmosphere is a brief nine days; the shortest of any major reservoir.
Why does groundwater have the longest residence time?
Groundwater has a long‑term “memory”, because it takes a long time to fill and empty a large reservoir, thus water has a long residence time in the subsurface.
What is the residence time of groundwater in an aquifer?
Estimated depth and residence time of the world's water supply
| Water | Equivalent depth (meters) | Residence Time |
|---|---|---|
| Rivers | .003 | ~2 weeks |
| Soil Moisture | .13 | ~2 weeks-1 year |
| Groundwater | 120 | ~2 weeks-10,000 years |
| Ice caps/Glaciers | 60 | 10-1000 years |
Which carbon reservoir has the longest residence time?
Check Your Understanding
- The residence time of carbon in the deep ocean is longer than in the atmosphere because there is many times more carbon residing in the deep ocean. …
- Residence time of carbon in the deep ocean is longer than in the atmosphere because water circulates so slowly in the ocean.
In which location does water reside the shortest How long does it reside there?
In which location does water reside the shortest? How long does it reside there? Atmosphere – up to nine days.
Which source has the widest range of residence time?
Residence time measures how long a single molecule of water stays in a water source. The slower the water source exchanges water with other sources, the longer the residence time. Thus, the slow-moving groundwater source will have the longest residence time because groundwater must flow into another source.
Which of the following carbon reservoirs has the longest residence time plants the oceans or sedimentary limestone?
Which of the following carbon reservoirs has the longest residence time: plants, the oceans, or sedimentary limestone? Sedimentary limestone, because a carbon atom may spend millions of years in the sedimentary/metamorphic rock reservoir, while it spends a short time (years to millennia) in the other reservoirs.
How long does water stay in a glacier?
20 to 100 years Glaciers trap that fresh water for 20 to 100 years. Ocean: Water can also end up in the ocean, where it could stay for over 3,000 years!
Which has a longer water residence time groundwater or surface water?
Residence time of water in the groundwater portion of the hydrologic cycle is much longer than in other compartments of the hydrologic cycle such as the surface water compartment or the atmosphere.
What is the residence time of carbon in the ocean?
350 years The average residence times of carbon in the atmosphere (5 years), the biosphere (13 years), and the oceans (350 years) are much shorter.