High-Resolution Age-Depth Model of a Peat Bog in Poland as an Important Basis for Paleoenvironmental Studies

Radiocarbon ◽  
2014 ◽  
Vol 56 (1) ◽  
pp. 109-125 ◽  
Author(s):  
B Fiałkiewicz-Kozieł ◽  
P Kołaczek ◽  
N Piotrowska ◽  
A Michczyński ◽  
E Łokas ◽  
...  
Keyword(s):  
High Resolution ◽  
Industrial Revolution ◽  
Climatic Factors ◽  
Accumulation Rate ◽  
Bulk Composition ◽  
Water Level Fluctuations ◽  
Peat Bog ◽  
Agricultural Activity ◽  
Peat Accumulation ◽  
Peat Formation

This article focuses on constructing a high-resolution age-depth model for the Puścizna Mała peat bog located in Orawa-Nowy Targ Basin (S Poland). The chronology was established on the basis of both210Pb and14C measurements, and further confirmed by pollen diagrams and the peat bulk composition (density, ash content, and measurements of C, N, S). The137Cs profile revealed significant downward migration of this radionuclide and was not suitable for geochronological interpretation. The peat profile in southern Poland records almost 2000 yr of paleoecological and geochemical changes. Major historical events linked to anthropogenic and climatic changes are recorded in the investigated proxies, which confirm the reliability of the age-depth model. Specifically, the Roman period, Migration period, Medieval times, as well as the Industrial Revolution are reflected in the palynology and bulk composition of the peat. However, dating results obtained for the core segment between 22–45 cm are problematic when confronted with other analyses. The highest peat accumulation rate of 2 mm yr-1(AD 1300–1400 according to the age-depth model) is not compatible with the section of the highest peat decomposition revealed by lithological description. Moreover, the onset of a drastic decline of forests reflected in the palynological data and dated to AD 1280–1340 (40 cm) is difficult to explain in the light of historical data. Therefore, the lithology, bulk density, and pollen were used to validate the obtained age-depth model. External forcing factors on the peat formation process may be indicated, including agricultural activity, water-level fluctuations, and natural climatic factors, which paradoxically caused doubling of the obtained peat accumulation rate.

High-Resolution Peat Core Chronology Covering the Last 12 KYR Applying an Improved Peat Bog Sampling

Radiocarbon ◽  
2018 ◽  
Vol 60 (5) ◽  
pp. 1367-1378 ◽  
Author(s):  
Katalin Hubay ◽  
Mihály Braun ◽  
Sándor Harangi ◽  
László Palcsu ◽  
Marianna Túri ◽  
...  
Keyword(s):  
High Resolution ◽  
Accumulation Rate ◽  
Peat Bog ◽  
Acid Base ◽  
Peat Accumulation ◽  
Peat Core ◽  
Ams Dating ◽  
Different Depths ◽  
Peat Profile ◽  
Bleaching Step

ABSTRACTThis work focuses on building a high-resolution age-depth model for quantitative palaeoclimate study from the Mohos peat bog, East Carpathian mountains. The investigated core presents a continuous peat profile for the last 12 kyr. The chronology was based on 36 accelerator mass spectrometry radiocarbon (AMS 14C) analyses of the separated Sphagnum samples from different depths of the profile. Dry Sphagnum samples for AMS dating were prepared using the classic acid-base-acid (ABA) method followed with an oxidative bleaching step to get clean cellulose. Sphagnum cellulose samples were measured by AMS using the EnvironMICADAS at the ICER (Debrecen, Hungary). A high-resolution chronology was obtained with the use of Bayesian age-depth modeling. Peat accumulation rate has been calculated and the sections with variable accumulation rate values were observed along the profile.

High-resolution radiocarbon dating to reconstruct last century environmental changes in the pacific island of Espiritu Santo

2021 ◽  
Author(s):  
Giorgia Camperio ◽  
Caroline Welte ◽  
S. Nemiah Ladd ◽  
Matthew Prebble ◽  
Nathalie Dubois
Keyword(s):  
High Resolution ◽  
Radiocarbon Dating ◽  
Environmental Changes ◽  
Accumulation Rate ◽  
Sediment Cores ◽  
Volcanic Eruptions ◽  
High Accumulation ◽  
Sedimentary Records ◽  
The Pacific ◽  
Rapid Accumulation

<p>Espiritu Santo is one of the 82 islands of the archipelago of Vanuatu and is the largest, highest, and most biodiverse of the insular country. Climatic changes linked to El Niño and extreme events such as cyclones and volcanic eruptions are a daily challenge in this remote area. These events can be recorded in sedimentary archives. Here we present a multi-proxy investigation of sediment cores retrieved from two small lakes located on the West coast of Espiritu Santo. Although the records span the last millennium, high-resolution radiocarbon dating of macrofossils reveals a rapid accumulation of sediment in the past 100 years. The high accumulation rate coupled with the high-resolution dating of freshwater sediments allows us to compare the <sup>14</sup>C bomb curve with the biogeochemical proxies of the sedimentary records. The results can then be validated against written and oral historical records linked with the societal perception of recent environmental changes in this vulnerable ecosystem.</p><div> <div title="Translate selected text"></div> <div title="Play"></div> <div title="Copy text to Clipboard"></div> </div>

Quantification of fluvial-peat interactions in the Pikeville formation Central Appalachian Basin, USA.

2021 ◽  
Author(s):  
Peter Wooldridge ◽  
Robert Duller ◽  
Rhodri Jerrett ◽  
Kyle Straub
Keyword(s):  
Accumulation Rate ◽  
Appalachian Basin ◽  
River Channels ◽  
Channel Depth ◽  
Peat Accumulation ◽  
Floodplain River ◽  
Basin Scale ◽  
Well Data ◽  
Fluvial Architecture ◽  
Sand Bodies

<p>Basin-scale fluvial architecture is, to a large extent, determined by the ability of river systems to migrate and avulse across their own floodplain. River avulsion takes place when a river aggrades by one channel depth to achieve super-elevation above the surrounding floodplain. However, peat enhancement of floodplain aggradation is likely to affect this fluvial behaviour and has received little attention. The interaction between river channels and peat-dominated floodplains is likely to have the effect of inhibiting or prolonging the conditions required for river avulsion, and so will impact on basin scale architecture during prolonged peat accumulation on floodplains. To elucidate and quantify the nature of this channel-floodplain interaction we investigate the coal-bearing clastic interval of the Carboniferous Pikeville Formation, Central Appalachian Basin, USA. Using a combination of well data and outcrop data, two coal horizons and intervening sand bodies, were mapped across an area of 5700 km<sup>2</sup> to ascertain overall basin-scale architecture. Comparison of the accumulation rate of the coal units (corrected for decompaction) with the synchronously deposited sand bodies suggests that extensive and rapid peat accumulation can increase avulsion timescales by 3 orders of magnitude and dramatically alter basin-scale fluvial architecture.</p>

scholarly journals A representative density profile of the North Greenland snowpack

2016 ◽  
Vol 10 (5) ◽  
pp. 1991-2002 ◽  
Author(s):  
Christoph Florian Schaller ◽  
Johannes Freitag ◽  
Sepp Kipfstuhl ◽  
Thomas Laepple ◽  
Hans Christian Steen-Larsen ◽  
...  
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
Density Profile ◽  
Accumulation Rate ◽  
Sampling Technique ◽  
Data Sets ◽  
Accumulation Rates ◽  
The North ◽  
North Greenland ◽  
Good Agreement

Abstract. Along a traverse through North Greenland in May 2015 we collected snow cores up to 2 m depth and analyzed their density and water isotopic composition. A new sampling technique and an adapted algorithm for comparing data sets from different sites and aligning stratigraphic features are presented. We find good agreement of the density layering in the snowpack over hundreds of kilometers, which allows the construction of a representative density profile. The results are supported by an empirical statistical density model, which is used to generate sets of random profiles and validate the applied methods. Furthermore we are able to calculate annual accumulation rates, align melt layers and observe isotopic temperatures in the area back to 2010. Distinct relations of δ18O with both accumulation rate and density are deduced. Inter alia the depths of the 2012 melt layers and high-resolution densities are provided for applications in remote sensing.

scholarly journals Assessment of the quality of the housing environment, taking into account selected climate conditions

2018 ◽  
Vol 49 ◽  
pp. 00057
Author(s):  
Justyna Kobylarczyk
Keyword(s):  
Industrial Revolution ◽  
Climatic Factors ◽  
Human Life ◽  
Climate Conditions ◽  
Factors Affecting ◽  
Modern Times ◽  
Housing Environment ◽  
Rational Management ◽  
State Of The Environment

For centuries, we have been observing the influence of nature on the conditions of human life, whose relationship with the natural environment has weakened during the period of changes brought about by the industrial revolution. However, the growing awareness of society about the dwindling resources of nature and the necessity to protect them resulted in the rediscovery of the importance of activities expressing concern for the state of the environment. It is consistent with the idea of sustainable development striving for rational management of natural resources. We also increasingly notice the possibility of using climatic factors to create optimal living conditions, taking into account, among other things, the relevant parameters of the objects. The article presents an analysis of climatic factors affecting the quality of the housing environment. These factors can be used in the pursuit of minimising energy consumption throughout the life cycle of buildings and for construction that utilises advanced technologies. Respecting the climate conditions in planning buildings of an appropriate scale, form and location is of great importance for shaping comfortable housing environments. It is planning that allows the symbiosis of architecture and the environment, which becomes a challenge of modern times.

scholarly journals Use of Bomb-Produced 14C to Evaluate the Amount of CO2 Emanating from Two Peat Bogs in Finland

Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 567-573 ◽  
Author(s):  
Högne Jungner ◽  
Eloni Sonninen ◽  
Göran Possnert ◽  
Kimmo Tolonen
Keyword(s):  
Emission Rate ◽  
Climatic Factors ◽  
Peat Bogs ◽  
Peat Bog ◽  
Annual Variations ◽  
Temperature And Precipitation ◽  
Activity Peak ◽  
Sphagnum Fuscum ◽  
Ams Dating ◽  
Eastern Finland

We used moss increment counting to obtain well-defined samples of the topmost peat layers of two Sphagnum fuscum hummocks. The two ombrotrophic bogs, Lakkasuo in central Finland and Korvinsuo in eastern Finland, are of different ages, covering 3 and 9 ka, respectively. Using AMS dating, we traced bomb-produced 14C through the topmost parts of the two peat profiles. A well-defined 14C activity peak was found in both sequences dating the corresponding layer to ad 1965. A comparison between the maximum peat activities and the corresponding atmospheric values for the period of interest provides an opportunity to evaluate the amount of CO2 emanating from the decaying peat bog, and taken up by the living sphagnum plants.Considerable variations in δ13C values were also observed. These variations indicate, at least partly, annual variations in the emission rate of CO2 from decomposition of older peat in the bog, and are connected with climatic factors such as temperature and precipitation.

scholarly journals High-Resolution Classification of South Patagonian Peat Bog Microforms Reveals Potential Gaps in Up-Scaled CH4 Fluxes by use of Unmanned Aerial System (UAS) and CIR Imagery

2016 ◽  
Vol 8 (3) ◽  
pp. 173 ◽  
Author(s):  
Jan Lehmann ◽  
Wiebke Münchberger ◽  
Christian Knoth ◽  
Christian Blodau ◽  
Felix Nieberding ◽  
...  
Keyword(s):  
High Resolution ◽  
Peat Bog ◽  
Unmanned Aerial System

scholarly journals Limited migration of soluble ionic species in a Siple Dome, Antarctica, ice core

1998 ◽  
Vol 27 ◽  
pp. 371-377 ◽  
Author(s):  
Karl J. Kreutz ◽  
Paul A. Mayewski ◽  
Sallie I. Whitlow ◽  
Mark S. Twickler
Keyword(s):  
High Resolution ◽  
Sulfonic Acid ◽  
Accumulation Rate ◽  
Ice Core ◽  
Ionic Species ◽  
Sea Salt ◽  
Methane Sulfonic Acid ◽  
Simple Diffusion ◽  
Siple Dome ◽  
Annual Resolution

High-resolution (>10 samples a−1) glaciochemical analyses covering the last 110 years from a Siplc Dome, Antarctica, ire core reveal limited migration of certain soluble ionic species (methane sulfonic acid, NO3 − and Mg2+). The observed chemical migration may be due in part to seasonal alternation between less acidic winter (from high sea-salt concentrations) and more acidic summer (from high marine biogenic acid concentrations) layers, common at coastal siles such as Siplc Dome. Exact mechanisms to expla in the migration are unclear, although simple diffusion and gravitational movement are unlikely since new peaks are formed where none previously existed in each case. Initial migration of each species is both shallower and earlier at Siple Dome than at other sites in Antarctica where similar phenomena have been observed, which may be related to the relatively low accumulation rate at Siple Dome (~13.3 cm ice a−1). Migration appears to be limited to either the preceding or following seasonal layer for each species, suggesting that paleoclimatic interpretations based on dala with lower than annual resolution are not likely to be affected.

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