Dendrogeomorphology review and new techniques of tree ring dating

03-May-2020 00:29 by 4 Comments

Dendrogeomorphology review and new techniques of tree ring dating - Sex vidio asia

The area chosen is the Kamienne Mountains, in south-west Poland, where many hillslopes show clear geomorphic signatures of landslides, but no surface displacements have been reported or described in historical times, . This study examines possible triggering factors for slope instability, particularly those that could be linked to episodes of high rainfall.We also intend to validate the usefulness of tree-ring eccentricity studies as an approach for the detection and analysis of activity patterns of slow moving landslides.

dendrogeomorphology review and new techniques of tree ring dating-59

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500 m a.s.l., hence the rainfall totals on the landslide affected slopes, situated at 550–870 m a.s.l., are likely to be raised by 10–15% in the highest locations.

Snow cover is present for 100–120 days in a year, a reaching maximum thickness of Karst) as dominant species.

However, such a forest composition has survived in a few places only, having been replaced by Norway spruce monocultures at the turn of the 20th century, after centuries of intense logging.

Detailed studies of Norway spruce response to ground instability were carried out at three locations, named here after as Suchawa, Turzyna, and Garbatka, from the name of the nearest mountain peakes.

1a) compared with slow-moving landslides, where the rate of movement may be less than a centimetre per year (Noferini ., 2013).

In the long-term, however, even such a subtle mass transfer may become significant for both the evolution of hillslopes and hazard and risk assessment.The study area is located in the Kamienne (Stone) Mountains, a range in the centre of the Sudetes Mountains, Central Europe (Fig. This area is known for the widespread occurrence of landslide-affected terrain, apparently of different ages (Migoń ., 2013). is composed of igneous and sedimentary rocks of late Carboniferous and early Permian age (Awdankiewicz, 1999; Fig. The former comprise both extrusive and sub-volcanic bodies of rhyolite, trachyandesite, and rhyolitic tuff, which overlie or intrude sedimentary packages of sandstones, mudstones and claystones.Juxtaposition of rigid volcanic rocks and competent sedimentary rocks, along with significant local topographic relief, sets the stage for slope instability.Prices in € represent the retail prices valid in Germany (unless otherwise indicated). Prices do not include postage and handling if applicable. We found ubiquitous evidence of ongoing slope instability by analysing the variability of tree-ring eccentricity index in trees growing on three apparently relict landslide slopes in the Sudetes (Poland, Central Europe).Slow movement of these landslide bodies occurs in the present-day conditions and is recorded almost every year, although with variable intensity.In this approach, changes in wood anatomy of trees growing on landslide-affected slopes are analyzed and interpreted in terms of external disturbance induced by slope instability (., 2013).

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