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Related Concept Videos

Responses to Drought and Flooding02:41

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
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Precipitation Gravimetry

Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
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Design Example: Design of an Irrigation Channel01:27

Design Example: Design of an Irrigation Channel

Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
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The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
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Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

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Related Experiment Video

Updated: Jun 14, 2026

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
13:27

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

Using a cloud to replenish parched groundwater modeling efforts.

Randall J Hunt1, Joseph Luchette, Willem A Schreuder

  • 1U.S. Geological Survey, Middleton, WI 53562, USA. rjhunt@usgs.gov

Ground Water
|March 25, 2010
PubMed
Summary
This summary is machine-generated.

Cloud computing offers powerful, on-demand computational resources to enhance groundwater models. This enables complex model calibration and uncertainty analysis, previously limited by high computational demands.

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Watershed Planning within a Quantitative Scenario Analysis Framework
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Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

Related Experiment Videos

Last Updated: Jun 14, 2026

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
13:27

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

Area of Science:

  • Environmental science
  • Hydrogeology
  • Computational modeling

Background:

  • Groundwater models benefit from increased parameter flexibility and soft-knowledge integration.
  • These advanced methods require significant computational resources, posing a barrier to widespread adoption.
  • Traditional computing infrastructure limits the scope and frequency of complex groundwater modeling tasks.

Purpose of the Study:

  • To explore the application of cloud computing for enhancing groundwater model calibration and uncertainty analysis.
  • To demonstrate how cloud-based resources can overcome computational limitations in sophisticated groundwater modeling.

Main Methods:

  • Utilizing cloud computing platforms to access scalable and on-demand virtual computing power.
  • Implementing techniques for creating, launching, and terminating virtual machines as needed.
  • Leveraging cloud storage for saving and reusing machine images for future modeling sessions.

Main Results:

  • Cloud computing provides cost-effective and flexible access to high-performance computing for groundwater modelers.
  • The use of virtual computers allows for routine execution of complex model calibration and uncertainty analyses.
  • Enables advanced modeling approaches that were previously computationally prohibitive.

Conclusions:

  • Cloud computing democratizes access to advanced computational resources for hydrogeological studies.
  • Modelers can now perform sophisticated groundwater model calibration and uncertainty analysis more efficiently and routinely.
  • This technological shift empowers more robust and comprehensive groundwater resource management and research.