English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Panola Mountain Research Watershed (PMRW), located in the Panola Mountain State Conservation Park, near Stockbridge, Ga., has been selected as a core research watershed under the Water, Energy, and Biogeochemical Budgets (WEBB) research initiative of the U.S. Geological Survey (USGS), Global Climate Change Program. This research plan describes ongoing and planned research activities at PMRW from 1984 through 1994. The watershed is 25 kilometers southeast of Atlanta, Ga., in the southern Piedmont physiographic province, and has an area of 41 hectares. The watershed is forested, except for a 3-hectare bedrock outcrop in the headwaters, in a second-growth oak, hickory, tulip poplar, and loblolly pine assemblage. Historical land use has included forestry, cultivation, and pasture. The forest composition and age structure reflects the periods of agricultural abandonment Deciduous and mixed forest stands are present in areas where agriculture was abandoned in the early 1900's. Coniferous stands occur in areas farmed as recently as the 1960's. The bedrock is dominated by Panola Granite (granodiorite composition) in the uplands; pods and lenses of Clairmont Formation (biotite plagioclase (±potassiumfeldspar) gneiss) are present in the lowlands. Since 1984, PMRW has been studied as a geochemical process research site under the USGS Acid Precipitation Thrust Program. Research conducted under this Thrust Program focused on the estimation of dry atmospheric deposition, short-term temporal variability of streamwater chemistry, sulfate adsorption characteristics of the soils, ground-water chemistry, throughfall chemistry, and streamwater quality. The Acid Precipitation Thrust Program continues (1993) to support core-data collection and a water-quality laboratory. Proposed research to be supported by the WEBB program is organized in three interrelated categories: streamflow generation and water-quality evolution, weathering and geochemical evolution, and regulation of soilwater chemistry. Proposed research on streamflow generation and water-quality evolution will focus on subsurface water movement, its influence in streamflow generation, and the associated chemical changes of the water that take place along its flowpath. Proposed research on weathering and geochemical evolution will identify the sources of cations observed in the streamwater at Panola Mountain and quantify the changes in cation source during storms. Proposed research on regulation of soil-water chemistry will focus on the poorly understood processes that regulate soil-water and ground-water chemistry. The proposed investigations will be strengthened by numerous historical, ongoing, and future collaborative research studies. The USGS PMRW program encourages cooperation with scientists from other Federal agencies and from the academic community. Ongoing investigations highlighting collaborative research efforts include an assessment of hydrologic pathways using stable isotopes (oxygen-18 and deuterium); automated, continuous monitoring of soil-moisture content using a computerized time-domain reflectometry system; an investigation of weathering processes using the evolution of radiogenic and stable isotopic chemical ratios and rare earth element concentrations; and a comparison of alternative methods for the calculation of dry deposition.

Water, energy, and biogeochemical budgets investigation at Panola Mountain research watershed, Stockbridge, Georgia; A research plan