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MED and SOM Data

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Created: Jul 14, 2020 at 8:19 p.m.
Last updated: Sep 25, 2020 at 5:52 p.m.
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This repository includes data used within manuscript titled "Freeze-Thaw Processes Degrade Post-fire Water Repellency in Wet Soils" submitted to the Hydrological Processess Journal.

Wildfires can cause heightened soil water repellency (hydrophobicity), which reduces infiltration while increasing erosion and flooding from post-fire rainfall. Post-fire soil water repellency degrades over time, often in response to repeated wetting and drying of the soil.

This study characterized the changes in hydrophobicity of Sierra Nevada mountain soils exposed to different combinations of wet-dry and freeze-thaw cycling. There are five treatments total consisted of 11 cycles and replicated 6 times. These treatments are:
1) WD -> wet/dry.
2) WDFT -> wet/dry/freeze/thaw
3) WFTD -> wet/freeze/thaw/dry
4) WFT -> wet/freeze/thaw (soil is wetted once but never dried)
5) DFT -> dry/freeze/thaw (soil is never wetted)

After each, cycle molarity of ethanol test (MED) was used to assess soil hydrophobicity. MED results are recorded in "MED.xlsx"

Soil Organic Matter (SOM) is often associated with soil hydrophobicity, thus we also measured SOM content of each cycle and treatment with 3 replicas for each using Walkley-Black test. SOM results are recorded in "SOM.xlsx"

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Jeannie Lakes Wilderness


Related Resources

This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Post-fire Soil Hydrophobicity Degradation Ekaterina Rakhmatulina  Discoverable &  Shareable Open Access


Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation


People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Sally Thompson

How to Cite

Rakhmatulina, E. (2020). MED and SOM Data, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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