Difference between revisions of "HJ Andrews Experimental Forest"
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== Geology == | == Geology == | ||
| + | The catchment contains residualand colluvial clay loam soils derived from andesitic tuffs (30%) and coarse breccias (70%) comprising the Little Butte Formation formed as the result of ashfall and pyroclasitic flows from Oligocene-Early Miocene volcanic activity. | ||
== Vegetation/Land use == | == Vegetation/Land use == | ||
Revision as of 11:39, 11 November 2013
Location
44.2 N, 122.2 W, in the central western Cascade Mountains of Oregon, USA
Catchment size
The main drainage within the HJA is Lookout Creek with 62 km²
Climate
The long-term mean annual precipitation varies from about 2300 mm (lower elevations) to 3550 mm (upper parts). Most of the precipitation (80%) falls between November and April, typically during long-duration frontal storms of low to moderate intensity. In the small catchments precipitation falls mainly as rainfall with snow more common at higher elevations of LOOK. While winters are generally wet and mild, summers are dry and rather cool (average of 18 °C in July).
Geology
The catchment contains residualand colluvial clay loam soils derived from andesitic tuffs (30%) and coarse breccias (70%) comprising the Little Butte Formation formed as the result of ashfall and pyroclasitic flows from Oligocene-Early Miocene volcanic activity.
Vegetation/Land use
Context of investigation
Measurements/Equipment
- Precipitation
- Meteorology CS2MET (44.12.54 N, 122.14.57 W, 485 m) since 1957
- Runoff
- Soil Moisture
- ET
- Sapflow
- Snow
- Catchment nutrient budgets
- Water residence time
- Sediment transport
Links to project webpages
other Links
References
- Gabrielli, C.P., McDonnell, J.J. 2012. An inexpensive and portable drill rig for bedrock groundwater studies in headwater catchments. Hydrol. Process. 26(4), 622-632, DOI: 10.1002/hyp.8212.
- Graham, C.B., McDonnell, J.J. 2010: Hillslope threshold response to rainfall: (2) Development and use of a macroscale model. Journal of Hydrology 393(1–2), 77–93, DOI: 10.1016/j.jhydrol.2010.03.008
- Graham,C:B., Barnard, H.B., Kavanagh, K.L., McNamara, J.P. 2013. Catchment scale controls the temporal connection of transpiration and diel fluctuations in stream flow. Hydrol. Process. 27(18), 2541-2556, DOI: 10.1002/hyp.9334
- Seibert, J., McDonnell, J.J. 2010. Land-cover impacts on streamflow: a change-detection modelling approach that incorporates parameter uncertainty. Hydrological Sciences Journal 55(3), 316-332, DOI: 10.1080/02626661003683264.