Spatio‐temporal specifics of hydro‐geomorphic processes in headwater parts of mid‐mountains reconstructed based on tree‐ring data: a case study from the hrubý jeseník mountains (czech republic)

2016 ◽  
Vol 98 (4) ◽  
pp. 369-388 ◽  
Author(s):  
Radek Tichavský ◽  
Karel Šilhán
Keyword(s):  
Czech Republic ◽  
Tree Ring ◽  
Tree Ring Data ◽  
Spatio Temporal ◽  
Geomorphic Processes

scholarly journals Debris-flow activity in abandoned channels of the Manival torrent reconstructed with LiDAR and tree-ring data

2011 ◽  
Vol 11 (5) ◽  
pp. 1247-1257 ◽  
Author(s):  
J. Lopez Saez ◽  
C. Corona ◽  
M. Stoffel ◽  
A. Gotteland ◽  
F. Berger ◽  
...  
Keyword(s):  
Debris Flow ◽  
Tree Ring ◽  
Debris Flows ◽  
Temporal Distribution ◽  
Alluvial Fan ◽  
Tree Ring Data ◽  
Pine Trees ◽  
Spatio Temporal ◽  
Flow Activity ◽  
Abandoned Channels

Abstract. Hydrogeomorphic processes are a major threat in many parts of the Alps, where they periodically damage infrastructure, disrupt transportation corridors or even cause loss of life. Nonetheless, past torrential activity and the analysis of areas affected during particular events remain often imprecise. It was therefore the purpose of this study to reconstruct spatio-temporal patterns of past debris-flow activity in abandoned channels on the forested cone of the Manival torrent (Massif de la Chartreuse, French Prealps). A Light Detecting and Ranging (LiDAR) generated Digital Elevation Model (DEM) was used to identify five abandoned channels and related depositional forms (lobes, lateral levees) in the proximal alluvial fan of the torrent. A total of 156 Scots pine trees (Pinus sylvestris L.) with clear signs of debris flow events was analyzed and growth disturbances (GD) assessed, such as callus tissue, the onset of compression wood or abrupt growth suppression. In total, 375 GD were identified in the tree-ring samples, pointing to 13 debris-flow events for the period 1931–2008. While debris flows appear to be very common at Manival, they have only rarely propagated outside the main channel over the past 80 years. Furthermore, analysis of the spatial distribution of disturbed trees contributed to the identification of four patterns of debris-flow routing and led to the determination of three preferential breakout locations. Finally, the results of this study demonstrate that the temporal distribution of debris flows did not exhibit significant variations since the beginning of the 20th century.

scholarly journals Low-frequency noise inδ13C andδ18O tree ring data: A case study ofPinus uncinatain the Spanish Pyrenees

2010 ◽  
Vol 24 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jan Esper ◽  
David C. Frank ◽  
Giovanna Battipaglia ◽  
Ulf Büntgen ◽  
Christopher Holert ◽  
...  
Keyword(s):  
Tree Ring ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Tree Ring Data ◽  
Spanish Pyrenees

scholarly journals Dendrogeomorphology and high-magnitude snow avalanches: a review and case study

2008 ◽  
Vol 8 (2) ◽  
pp. 303-309 ◽  
Author(s):  
D. R. Butler ◽  
C. F. Sawyer
Keyword(s):  
Tree Ring ◽  
Index Number ◽  
Snow Avalanches ◽  
High Magnitude ◽  
Tree Ring Data ◽  
Critical Choice ◽  
Minimum Number ◽  
Size Type ◽  
Ring Analysis

Abstract. The application of the principles of dendrogeomorphology for the dating of high-magnitude snow avalanches is well established in the natural hazards literature. A variety of methodologies are employed by different authors, however, and no standardization currently exists for appropriate sample sizes, the issue of "weighting" certain tree-ring responses as more important than others, or the minimum number of responding trees required in order to infer an avalanche event. We review the literature of dendrogeomorphology as it applies to snow avalanches, and examine the questions of sample size, type of ring reactions dated and weighted, and minimum responses. We present tree-ring data from two avalanche paths in the Rocky Mountains of Montana, USA, from trees uprooted by major snow avalanches in the winter of 2002. These data provide distinct chronologies of past avalanche events, and also illustrate how the critical choice of a minimum Index Number can affect the number of avalanche events in a final chronology based on tree-ring analysis.

scholarly journals Spatio-temporal assessment of beech growth in relation to climate extremes in Slovenia – An integrated approach using remote sensing and tree-ring data

2020 ◽  
Vol 287 ◽  
pp. 107925 ◽  
Author(s):  
Mathieu Decuyper ◽  
Roberto O. Chávez ◽  
Katarina Čufar ◽  
Sergio A. Estay ◽  
Jan G.P.W. Clevers ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Tree Ring ◽  
Climate Extremes ◽  
Integrated Approach ◽  
Tree Ring Data ◽  
Spatio Temporal ◽  
Temporal Assessment

scholarly journals Dendrochronologically dated pine stumps document phase wise bog expansion at a northwest German site between c. 6700 BC and c. 3400 BC

2017 ◽  
Author(s):  
Inke Elisabeth Maike Achterberg ◽  
Jan Eckstein ◽  
Bernhard Birkholz ◽  
Andreas Bauerochse ◽  
Hanns Hubert Leuschner
Keyword(s):  
Pinus Sylvestris ◽  
Environmental Changes ◽  
Water Level Rise ◽  
Tree Ring Data ◽  
Spatio Temporal ◽  
Local Water ◽  
Site Chronology ◽  
Feature Trees

Abstract. This is a dendrochronological investigation of a mire site densely covered by peat-preserved pine stumps (Pinus sylvestris). The site in the northwest German Tote Moor revealed to feature trees from various Holocene millennia. The dendrochronologically dated site chronology covers 2345 years between 6703 BC and 3403 BC, containing 5 gaps between 6 and 550 years in length. It consists of 477 trees. A floating chronology segment of 309 years, containing 30 trees, was radiocarbon dated to the beginning of the 7th millennium cal. BC. The tree ring data from the site documents environmental changes over a larger period of time. Furthermore, the site is covered densely with in situ tree stumps from the fen-bog transition. This facilitates the spatio-temporal reconstruction of mire development, which is based on 212 in situ tree stumps in the case study presented here. Peat-stratigraphical survey was carried out additionally, and elevations a.s.l. were determined at several locations. Tree die-off phases, which indicate the local water level rise, mostly in context of the local fen-bog transition, are evident for c. 6600–6450 BC, c. 6350–5750 BC, c. 5300–4900 BC, c. 4700–4550 BC, c. 3900–3850 BC, 3700–3600 BC, c. 3500–3450 BC and c. 3400 BC.

Utilising historical tree-ring data for dendroclimatology: A case study from the Bavarian Forest, Germany

2004 ◽  
Vol 21 (2) ◽  
pp. 53-68 ◽  
Author(s):  
Rob J.S. Wilson ◽  
Jan Esper ◽  
Brian H. Luckman
Keyword(s):  
Tree Ring ◽  
Tree Ring Data ◽  
Bavarian Forest

Spatio-temporal maps of past avalanche events derived from tree-ring analysis: A case study in the Zermatt valley (Valais, Switzerland)

2018 ◽  
Vol 154 ◽  
pp. 9-22 ◽  
Author(s):  
Adrien Favillier ◽  
Sébastien Guillet ◽  
Daniel Trappmann ◽  
Pauline Morel ◽  
Jérôme Lopez-Saez ◽  
...  
Keyword(s):  
Tree Ring ◽  
Tree Ring Analysis ◽  
Spatio Temporal ◽  
Ring Analysis
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