Climatic summaries and documentation for the primary meteorological station, H.J. Andrews Experimental Forest, 1972 To 1984.

Bierlmaler, Frederick A.; McKee, Arthur

doi:10.2737/pnw-gtr-242

Cited by 45 publications

(36 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Andrews Experimental Forest (HJA; 448N,122830 0 W) on the west slope of the Cascade Range in Oregon, USA. This region experiences summer drought, with <10% of the total rainfall of 220 cm falling during the summer months (Bierlmaier and McKee, 1989). Parent materials are volcanic in origin, including ash flows, breccias, basalts and andesites.…”

Section: Study Sites and Sampling Designmentioning

confidence: 99%

Understory vegetation in young Douglas-fir forests: does thinning help restore old-growth composition?

Lindh

Muir

2004

Forest Ecology and Management

View full text Add to dashboard Cite

Section: Study Sites and Sampling Designmentioning

confidence: 99%

Understory vegetation in young Douglas-fir forests: does thinning help restore old-growth composition?

Lindh

Muir

2004

Forest Ecology and Management

View full text Add to dashboard Cite

“…Elevation within the catchment ranges from 425 m at the mouth of Lookout Creek to 1600 m at the highest points along the drainage divide. Average annual precipitation is approximately 2500 mm, falling mainly between November and March [Bierlmaier and McKee, 1989]. Peak flood flows in the catchment are generated by rain-onsnow events.…”

Section: Methodsmentioning

confidence: 99%

Floods, channel change, and the hyporheic zone

Wondzell¹,

Swanson²

1999

Water Resources Research

1,389

115

View full text Add to dashboard Cite

Abstract. We investigated the influence of flood-induced channel changes on the hyporheic zone of 4th-and 5th-order reaches of a mountain stream network. Preflood versus postflood comparisons were made in three study reaches from well networks established before and reestablished after a major flood. Flood effects were scale dependent and varied with channel constraint and the dominant channel forming process. Large changes were observed in unconstrained stream reaches where channel incision drove large changes in subsurface flow paths and the extent of the hyporheic zone. However, subreach scale differences were apparent. In the lower portion of the studied reach, channel incision lowered the water table, leading to abandonment of secondary channels, and decreased the extent of the hyporheic zone that previously extended more than 30 m into the floodplain. In contrast, the extent of the hyporheic zone increased at the head of the studied reach where channel incision steepened head gradients through a meander bend. In another unconstrained reach, lateral channel jumps dramatically altered exchange flow paths. However, the extensive hyporheic zone was maintained throughout the reach. Less change was observed in the constrained stream reach where both the depth and area of sediment available to be reworked by the flood were limited by bedrock constraining the width of the valley floor. This flood dramatically changed the hyporheic zone at the three study sites and these physical changes are expected to be biologically important, considering the role of the hyporheic zone in stream ecosystem processes.

show abstract

“…Data from six climate stations (Primet, CS-2, Cenmet, Vanmet, Hi-15, upper Lookout) and three stream gauging stations (WS 2, 8, and 9) were used in this study (Figure 1) (Bierlmaier and McKee, 1989). Snow water equivalent has been measured at Vanmet since 1987 in a 1 ð 1 m Park Mechanical pressure pillow (details on instrumentation related to this study are available at http://www.fsl.orst.edu/lter/data/abstractdetail.cfm?…”

Section: Data Collectionmentioning

confidence: 99%

Climate variability, snow, and physiographic controls on storm hydrographs in small forested basins, western Cascades, Oregon

Perkins

Jones

2008

Hydrological Processes

View full text Add to dashboard Cite

Abstract:Large floods are often attributed to the melting of snow during a rain event. This study tested how climate variability, snowpack presence, and basin physiography were related to storm hydrograph shape in three small (<1 km 2 ) basins with old-growth forest in western Oregon. Relationships between hydrograph characteristics and precipitation were tested for approximately 800 storms over a nearly 30-year period. Analyses controlled for (1) snowpack presence/absence, (2) antecedent soil moisture, and (3) hillslope length and gradient. For small storms (<150 mm precipitation), controlling for precipitation, the presence of a snowpack on near-saturated soil increased the threshold of precipitation before hydrograph rise, extended the start lag, centroid lag, and duration of storm hydrographs, and increased the peak discharge. The presence of a snowpack on near-saturated soil sped up and steepened storm hydrographs in a basin with short steep slopes, but delayed storm hydrographs in basins with longer or more gentle slopes. Hydrographs of the largest events, which were extreme regional rain and rain-on-snow floods, were not sensitive to landform characteristics or snowpack presence/absence. Although the presence of a snowpack did not increase peak discharge in small, forested basins during large storms, it had contrasting effects on storm timing in small basins, potentially synchronizing small basin contributions to the larger basin hydrograph during large rain-on-snow events. By altering the relative timing of hydrographs, snowpack melting could produce extreme floods from precipitation events whose size is not extreme. Further work is needed to examine effects of canopy openings, snowpack, and climate warming on extreme rain-on-snow floods at the large basin scale.

show abstract

Climatic summaries and documentation for the primary meteorological station, H.J. Andrews Experimental Forest, 1972 To 1984.

Abstract: Bierlmaler, Frederick A.; McKee, Arthur. 1989. Climatic summaries and documentation for the primary meteorological station, H.

Cited by 45 publications

References 2 publications

Understory vegetation in young Douglas-fir forests: does thinning help restore old-growth composition?

Understory vegetation in young Douglas-fir forests: does thinning help restore old-growth composition?

Floods, channel change, and the hyporheic zone

Climate variability, snow, and physiographic controls on storm hydrographs in small forested basins, western Cascades, Oregon

Contact Info

Product

Resources

About