Frequency and Magnitude of Selected Historical Landslide Events in the Southern Appalachian Highlands of North Carolina and Virginia: Relationships to Rainfall, Geological and Ecohydrological Controls, and Effects

2016 ◽  
pp. 203-262 ◽  
Author(s):  
Richard M. Wooten ◽  
Anne C. Witt ◽  
Chelcy F. Miniat ◽  
Tristram C. Hales ◽  
Jennifer L. Aldred
Keyword(s):  
North Carolina ◽  
Southern Appalachian

scholarly journals Investigation of Atmospheric Rivers Impacting the Pigeon River Basin of the Southern Appalachian Mountains

2018 ◽  
Vol 33 (1) ◽  
pp. 283-299 ◽  
Author(s):  
Douglas K. Miller ◽  
David Hotz ◽  
Jessica Winton ◽  
Lukas Stewart
Keyword(s):  
North Carolina ◽  
River Basin ◽  
Large Scale ◽  
Large Fraction ◽  
Appalachian Mountains ◽  
Warm Season ◽  
Atmospheric Rivers ◽  
Southern Appalachian Mountains ◽  
Low Level ◽  
Southern Appalachian

Abstract Rainfall observations in the Pigeon River basin of the southern Appalachian Mountains over a 5-yr period (2009–14) are examined to investigate the synoptic patterns responsible for downstream flooding events as observed near Knoxville, Tennessee, and Asheville, North Carolina. The study is designed to address the hypothesis that atmospheric rivers (ARs) are primarily responsible for the highest accumulation periods observed by the gauge network and that these periods correspond to events having a societal hazard (flooding). The upper 2.5% (extreme) and middle 33% (normal) rainfall events flagged using the gauge network observations showed that half of the heaviest rainfall cases were associated with an AR. Of those extreme events having an AR influence, over 73% had a societal hazard defined as minor-to-major flooding at the USGS river gauge located in Newport, Tennessee, or flooding observations for locations near the Tennessee and North Carolina border reported in the Storm Data publication. Composites of extreme AR-influenced events revealed a synoptic pattern consisting of a highly amplified slow-moving positively tilted trough, suggestive of the anticyclonic Rossby wave breaking scenario that sometimes precedes hydrological events of high impact. Composites of extreme non-AR events indicated a large-scale weather pattern typical of a warm season scenario in which an anomalous low-level cyclone, cut off far from the primary upper-tropospheric jet, was located in the southeastern United States. AR events without a societal hazard represented a large fraction (75%–88%) of all ARs detected during the study period. Synoptic-scale weather patterns of these events were fast moving and had weak low-level atmospheric dynamics.

Soyedina Ricker, 1952 (Plecoptera: Nemouridae) in the eastern Nearctic: review of species concepts, proposed morphology-based species groups, and description of a new species from North Carolina

Zootaxa ◽  
2019 ◽  
Vol 4658 (2) ◽  
pp. 223-250
Author(s):  
SCOTT A. GRUBBS ◽  
RICHARD W. BAUMANN
Keyword(s):  
North Carolina ◽  
New Species ◽  
Species Concepts ◽  
Distribution Map ◽  
Highland Region ◽  
Southern Appalachian ◽  
Dichotomous Key ◽  
Western North Carolina ◽  
Species Groups ◽  
A New Species

The eastern Nearctic species of the genus Soyedina Ricker, 1952 (Plecoptera: Nemouridae) are reviewed. Two morphology-based species groups are proposed based on epiproct characteristics. Soyedina sheldoni sp. nov. is described from the southern Appalachian Highland region of western North Carolina. A distribution map and a dichotomous key to all nine Nearctic species are provided.

Southern Appalachian Hardwood Timber Market Trends

1989 ◽  
Vol 13 (1) ◽  
pp. 29-33
Author(s):  
J. E. De Steiguer ◽  
L. W. Hayden ◽  
D. L. Holley ◽  
W. G. Luppold ◽  
W. G. Martin ◽  
...  
Keyword(s):  
North Carolina ◽  
Forest Harvesting ◽  
National Forest ◽  
Southern Appalachia ◽  
Factors Associated ◽  
Southern Appalachian ◽  
Western North Carolina ◽  
Apparent Inconsistency ◽  
Market Trends ◽  
Timber Market

Abstract Since 1980, the hardwood timber harvests in Southern Appalachia, and particularly in western North Carolina, have risen to a 20-year high. Increased harvests accompanied, in some cases, by rising real stumpage prices for private timber, could be interpreted as indications of economicscarcity. Large timber inventories, however, indicate that physical supply is not a major problem. Tract subdivision and changes from farm to nonfarm ownerships may be creating supply problems. While real prices for private stumpage have risen in North Carolina, prices for National Foresttimber have fallen rather drastically. Possible causes for this apparent inconsistency include accelerated National Forest harvesting and weak demand for federal timber due to "nuisance factors" associated with purchase of federal timber. South. J. Appl. For. 13(1):29-33.

scholarly journals Impact of Imidacloprid for Control of Hemlock Woolly Adelgid on Nearby Aquatic Macroinvertebrate Assemblages

2011 ◽  
Vol 35 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Melissa A. Churchel ◽  
James L. Hanula ◽  
C. Wayne Berisford ◽  
James M. Vose ◽  
Mark J. Dalusky
Keyword(s):  
North Carolina ◽  
Aquatic Invertebrates ◽  
Organic Matter Content ◽  
Adult Emergence ◽  
Hemlock Woolly Adelgid ◽  
Adelges Tsugae ◽  
Matter Content ◽  
Systemic Insecticide ◽  
Aquatic Macroinvertebrate ◽  
Southern Appalachian

Abstract Imidacloprid, a systemic insecticide that acts on the nervous system, is currently being used to control hemlock woolly adelgid (Adelges tsugae Annand), which is damaging hemlock trees. The objective of this study was to determine whether soil injection with imidacloprid for hemlock woolly adelgid control near streams adversely affects aquatic invertebrates. Eastern hemlocks (Tsuga canadensis) in the watersheds surrounding four streams in the southern Appalachian region of Georgia and North Carolina were treated with imidacloprid. Addie Branch was the only stream that exhibited a possible effect from imidacloprid treatment. However, the data followed the same pattern as the other treatment streams, but with a more pronounced decrease in taxa due to adult emergence. Only a trace amount of imidacloprid was detected in one water sample from Holcomb Tributary over a period of 2 years, and no effect was observed on the aquatic macroinvertebrates in that stream. However, caution should be used when applying these results to other areas with different soil types (e.g., low organic matter content) that may not bind imidacloprid as tightly. Our results indicate that soil injections of imidacloprid can safely be used in the southern Appalachian area to control hemlock woolly adelgid.

Some Climate-Altitude Relationships in the Southern Appalachian Mountain Region

1959 ◽  
Vol 40 (7) ◽  
pp. 352-359 ◽  
Author(s):  
R. R. Dickson
Keyword(s):  
North Carolina ◽  
Potential Evapotranspiration ◽  
Growing Season ◽  
Regression Equations ◽  
Entire Area ◽  
Mountain Valley ◽  
Southern Appalachian ◽  
Western North Carolina ◽  
Temperature Ranges

The variation of certain climatic elements with elevation is examined for Tennessee-North Carolina portions of the Southern Appalachian region. Regression equations relating elevation to annual, January, and July mean temperatures and mean daily temperature ranges and to length of growing season are derived. Early growing-season data for 15 mountain-valley systems in western North Carolina are examined and regression lines developed relating length of growing season to elevation for valley and summit locations. These regression lines adjusted for departure of early data from long-term averages appear applicable to recent long-term data and present a useful means of refining the growing season-elevation relationship. Although a satisfactory precipitation-elevation relationship is unattainable due presumably to slope and exposure effects, an estimate is given of the mean annual snowfall-elevation relationship. Graphs are presented showing the variation of potential evapotranspiration with elevation based on computations for selected locations from 1075 ft to 6684 ft; results are believed representative of the entire area under consideration.

Late Quaternary Landscape Evolution at Flat Laurel Gap, Blue Ridge Mountains, North Carolina

1988 ◽  
Vol 30 (1) ◽  
pp. 7-11 ◽  
Author(s):  
David S. Shafer
Keyword(s):  
North Carolina ◽  
Landscape Evolution ◽  
Late Quaternary ◽  
Appalachian Mountains ◽  
Blue Ridge ◽  
Blue Ridge Mountains ◽  
Southern Appalachian ◽  
Organic Sediment ◽  
Absolute Age ◽  
Age Determinations

Analysis of colluvial, fluvial, and bog sediments at Flat Laurel Gap (1500 m) in the Blue Ridge Mountains of North Carolina provides a record of late Quaternary landscape evolution. Thermoluminescence (TL) analysis provides the first absolute-age determinations available for presumed periglacial deposits in the southern Appalachian Mountains. The Pleistocene/Holocene transition, dated between 11,900 and 10,100 yr B.P., represents a period of climatic amelioration and a change from colluvial to alluvial processes. A TL date of 7400 ± 1000 yr B.P. for matrix within a block-stream indicates possible early Holocene reworking of Pleistocene periglacial colluvium. Organic sediment deposition in a bog that began about 3400 yr B.P. increased in rate from 0.02 to 0.09 cm/yr with the onset of logging and land clearance about 1880 A.D.

Wildlife use of Southern Appalachian wetlands in North Carolina

1994 ◽  
Vol 77 (3-4) ◽  
pp. 349-358 ◽  
Author(s):  
A. C. Boynton
Keyword(s):  
North Carolina ◽  
Wildlife Use ◽  
Southern Appalachian
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