Annually laminated sediments from Onondaga Lake, New York (USA) provide a basis for high-resolution studies of lake degradation and recovery

2014 ◽  
Vol 53 (1) ◽  
pp. 107-121 ◽  
Author(s):  
H. Chandler Rowell ◽  
Richard F. Bopp ◽  
Feng Peng ◽  
David J. Velinsky ◽  
Jay A. Bloomfield
Keyword(s):  
New York ◽  
High Resolution ◽  
Laminated Sediments ◽  
Onondaga Lake ◽  
Annually Laminated Sediments

A new high-resolution radiocarbon Bayesian age model of the Holocene and Late Pleistocene from core MD02-2494 and others, Effingham Inlet, British Columbia, Canada; with an application to the paleoseismic event chronology of the Cascadia Subduction Zone

2013 ◽  
Vol 50 (7) ◽  
pp. 746-760 ◽  
Author(s):  
Randolph J. Enkin ◽  
Audrey Dallimore ◽  
Judith Baker ◽  
John R. Southon ◽  
Tara Ivanochko
Keyword(s):  
British Columbia ◽  
High Resolution ◽  
Subduction Zone ◽  
Laminated Sediments ◽  
Cascadia Subduction Zone ◽  
K Value ◽  
Radiocarbon Dates ◽  
Age Model ◽  
Annually Laminated Sediments ◽  
Effingham Inlet

Annually laminated sediments from the anoxic inner basin of Effingham Inlet, Pacific coast of Vancouver Island, British Columbia, Canada, yield a high-resolution 42 m paleoenvironmental record, from the present to about 14 ka 14C BP (17 ka cal BP). A new age model, based on 68 radiocarbon dates from twigs and small plant material, from the 40 m core MD02-2494 and 2 m freeze cores from the surface, is anchored by the Mazama Ash and varve counting. A Poisson-process sedimentation model is used, applying a new method to determine the Poisson k value, giving a realistic age model compatible with the multi-proxy core data. Twenty-one “seismites”, which are lithofacies in the Effingham cores that may be representative of seismically triggered mass-wasting events, are identified and dated precisely, then compared with the chronology of the deep-sea turbidite record farther south in the Cascadia Subduction Zone (CSZ), to determine if regional sediment disturbances can be identified. With 16 proposed correlations, Effingham seismite ages are 169 ± 206 years older than turbidite ages estimated largely by radiocarbon analysis of foraminifera in hemipelagic deposits.

Quantitative paleolimnological inference models applied to a high-resolution biostratigraphic study of lake degradation and recovery, Onondaga Lake, New York (USA)

2016 ◽  
Vol 55 (3) ◽  
pp. 241-258 ◽  
Author(s):  
H. Chandler Rowell ◽  
Mihaela D. Enache ◽  
Roberto Quinlan ◽  
Alison J. Smith ◽  
Jay A. Bloomfield ◽  
...  
Keyword(s):  
New York ◽  
High Resolution ◽  
Onondaga Lake ◽  
Inference Models

scholarly journals CULTURAL DEVELOPMENT OF THE PALLARS REGION (NE IBERIAN PENINSULA) FROM THE BRONZE AGE TO THE PRESENT

2021 ◽  
Author(s):  
Valentí Rull
Keyword(s):  
High Resolution ◽  
Bronze Age ◽  
Mediterranean Region ◽  
Landscape Dynamics ◽  
Cultural Development ◽  
Laminated Sediments ◽  
Late Bronze Age ◽  
Annually Laminated Sediments ◽  
Ne Iberian Peninsula ◽  
The Bronze Age

This manuscript is an abridged translation of the Catalan book entitled: "Història del Pallars. Dels origens als nostres dies", edited by C. Marugan and V. Rapalino, published by Pagès Editors (Lleida) in 2005. The manuscript contains the archaeological and historical information needed for paleoecological research in the Pyrenean Pallars region, especially for the interpretation of vegetation and landscape dynamics inferred from high-resolution palynological analyses of the annually-laminated sediments of Lake Montcortès, which contain the longest, continuous and absolutely varve-dated sequence of the Mediterranean region encompassing the last 3000 years (Late Bronze Age to present).

Superior 2X2 Slides

1975 ◽  
Vol 33 ◽  
pp. 158-159
Author(s):  
Harry Schaefer ◽  
Bruce Wetzel
Keyword(s):  
New York ◽  
High Resolution ◽  
Black And White ◽  
Fine Grain ◽  
White Film

High resolution 24mm X 36mm positive transparencies can be made from original black and white negatives produced by SEM, TEM, and photomicrography with ease, convenience, and little expense. The resulting 2in X 2in slides are superior to 3¼in X 4in lantern slides for storage, transport, and sturdiness, and projection equipment is more readily available. By mating a 35mm camera directly to an enlarger lens board (Fig. 1), one combines many advantages of both. The negative is positioned and illuminated with the enlarger and then focussed and photographed with the camera on a fine grain black and white film.Specifically, a Durst Laborator 138 S 5in by 7in enlarger with 240/200 condensers and a 500 watt Opale bulb (Ehrenreich Photo-Optical Industries, Inc., New York, NY) is rotated to the horizontal and adjusted for comfortable eye level viewing.

Individual particle analysis of suspended materials in Onondaga Lake, New York

1991 ◽  
Vol 25 (4) ◽  
pp. 736-744 ◽  
Author(s):  
David L. Johnson ◽  
Jianfu Jiao ◽  
Saul G. DosSantos ◽  
Steven W. Effler
Keyword(s):  
New York ◽  
Individual Particle ◽  
Particle Analysis ◽  
Onondaga Lake ◽  
Individual Particle Analysis

Examining Terrain Effects on an Upstate New York Tornado Event Utilizing a High-Resolution Model Simulation

2021 ◽  
Author(s):  
Luke J. LeBel ◽  
Brian H. Tang ◽  
Ross A. Lazear
Keyword(s):  
New York ◽  
High Resolution ◽  
Wind Shear ◽  
Model Simulation ◽  
Wrf Model ◽  
Severe Weather ◽  
Streamwise Vorticity ◽  
Low Level ◽  
Severe Convection ◽  
The Impact

AbstractThe complex terrain at the intersection of the Mohawk and Hudson valleys of New York has an impact on the development and evolution of severe convection in the region. Specifically, previous research has concluded that terrain-channeled flow in the Mohawk and Hudson valleys likely contributes to increased low-level wind shear and instability in the valleys during severe weather events such as the historic 31 May 1998 event that produced a strong (F3) tornado in Mechanicville, New York.The goal of this study is to further examine the impact of terrain channeling on severe convection by analyzing a high-resolution WRF model simulation of the 31 May 1998 event. Results from the simulation suggest that terrain-channeled flow resulted in the localized formation of an enhanced low-level moisture gradient, resembling a dryline, at the intersection of the Mohawk and Hudson valleys. East of this boundary, the environment was characterized by stronger low-level wind shear and greater low-level moisture and instability, increasing tornadogenesis potential. A simulated supercell intensified after crossing the boundary, as the larger instability and streamwise vorticity of the low-level inflow was ingested into the supercell updraft. These results suggest that terrain can have a key role in producing mesoscale inhomogeneities that impact the evolution of severe convection. Recognition of these terrain-induced boundaries may help in anticipating where the risk of severe weather may be locally enhanced.

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