Questions tagged [hydrology]

Hydrology is the study of the properties and behaviour of water. It concerns both surface as well as subsurface water, although water in the oceans and atmosphere is generally excluded. Those are studied by oceanography and meteorology, respectively.

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12
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2answers
384 views

What does groundwater consist of?

I heard that groundwater is rich in minerals and fluorides, but I have no clear thoughts on what else it contains and whether the ground water differs from area to area. Can someone please shed some ...
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What's the contribution of different types of river sources? [closed]

There are different types of river sources, most people might think of springs, melting snow or glaciers, but other types of sources can include wet meadows or marshland. In terms of volume, what is ...
12
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1answer
411 views

Is the cause of Old Faithful's bimodal distribution for eruption times straightforward?

From wikipedia: With a margin of error of 10 minutes, Old Faithful will erupt 65 minutes after an eruption lasting less than 2.5 minutes or 91 minutes after an eruption lasting more than 2.5 ...
13
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1answer
238 views

How does soil redox potential affect the rate of denitrification?

Denitrification requires low oxygen conditions as wells as organic carbon. Are reduced soils (e.g gleysols) more likely to have higher denitrification rates because they have low oxygen levels?
10
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2answers
125 views

Is there any link between sea-water inflitration into groundwater and nitrate?

I recently read a pop-science article about sea-water infilitration into (sweet) groundwater. One specific instance mentioned was the gaza strip: Exzessive well building and drawing of groundwater ...
5
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1answer
59 views

Do river fluxes help contribute to long-term carbon sequestration?

Rivers help transport sediment from higher regions into the oceans (where it's hard to get back into the atmosphere). And this sediment could be carbon-rich.
10
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1answer
2k views

How are minor tributaries of a river determined?

What are the criteria to determine if river A is a major or minor tributary to another River B? Is stream order the only deciding factor i.e. the highest order is the main stem, one less order is a ...
10
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1answer
601 views

What's the geological period of the birth of the river Ganges?

Avatarana or Descent of the Ganges (extracted from Wikipedia): "In late May or early June every year, Hindus celebrate the avatarana or descent of the Ganges from heaven to earth." There are ...
15
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1answer
238 views

Are there situations where the groundwater table doesn't follow the morphology of the surface?

In most or all geological site reports I read, the groundwater table (of the uppermost groundwater layer) always followed the morphology of the surface. Is this always the case? Are there signs for ...
10
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1answer
251 views

How to determine the transmissivity of a system of rocks and faults from the stationary drawdown pattern?

I have a dataset containing high frequency measurements of the hydraulic head at different locations in a 5x6km area. Also known are the precipitation, evaporation, and pumped discharges from a number ...
14
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1answer
262 views

Recharge a dry aquifer?

Aquifers have a natural recharge rate. However, some aquifers rely on fossil water for their primary (or even sole) water supply. When water in a well is pulled from these aquifers faster than they ...
9
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1answer
59 views

Lab procedure for analyzing/assessing the presence of semi-volatile solids

I'm looking for a lab experiment design that shows how to measure the presence of semi-volatile solids in water (and not sludge or soil or solids). All I have found so far are chromotography/mass ...
14
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1answer
375 views

What are the impacts of sublimation on an annual mountain snowpack?

Massive amounts of freshwater rests atop the world's mountains in the form of ice, snow, permafrost, and glaciers. Many areas of the world rely upon the melting of snow and ice to recharge their ...