Use of the 3-D scanner in mapping and monitoring the dynamic degradation of soils: case study of the Cucuteni-Baiceni Gully on the Moldavian Plateau (Romania)

Abstract

Abstract. The 3-D scanner, a rapid and precise means of monitoring the dynamics of erosive processes, was first used nationally (Romania) as a new technique of cartography and monitoring the dynamics of soil degradation processes in the Moldavian Plateau. Three sets of measurements took place: in 2008, in 2009 and in 2010, at intervals of exactly one year for the first and six months for the second part. Qualitative and quantitative differences were highlighted. The data obtained were corroborated with precipitation in the area studied. The 3-D scanner has a measurement accuracy of 6 mm. The map highlights the dynamics of gullies developed and may form the basis for the prediction of soil degradation phenomena. The dynamics of the gully and the type of land use show that the phenomenon of erosion of the Moldova Plateau will continue to accelerate. In this case, the gully attacked and destroyed an archaeological site of national importance. The rate of advance of the Cucuteni-Baiceni gully is extremely high (10 m/1.6 years). There are no measures at all to reduce or fight the process of the gully advance. Maximum erosion occurred at the beginning of spring after a winter rich in rainfall, which made the terrain subject to the process of subsidence.

GIS-based evaluation of diagnostic areas in landslide susceptibility analysis of Bahluieț River Basin (Moldavian Plateau, NE Romania). Are Neolithic sites in danger?

“…Frequency ratio (FR), analytic hierarchy process (AHP), and statistical index (SI) are among the most common methods used to predict landslide susceptibility (Althuwaynee et al, 2014;Nicu, 2018a). The qualitative and quantitative assessment of landslide susceptibility made great progress over the last decade because of an increase in computing capacity and programming (Guzzetti et al, 1999;Chen et al, 2016;Aburas et al, 2017), as well new measurement techniques (Choi et al, 2012;Romanescu et al, 2012).…”

“…All the surveys were made in STEREO 70, the official projection of Romania. They are widely used in monitoring soil erosion processes that are affecting cultural heritage sites (Romanescu et al, 2012;Romanescu and Nicu, 2014;Kincey et al, 2017). Geophysical surveys were made with a 5-probe-array fluxgate gradiometer, which is part of the Sensys system; field data were georeferenced and processed with the help of Geoplot software.…”

Exceptional floods on a developed river: case study for the Bistrita River from the Eastern Carpathians (Romania)

“…At the same time, an increase in drought during summer and an increase in the intensity of the rains in the warm season have also been noted. Maximum rainfall intensity is up to 200 mm/24 h, and average rainfall is 600-800 mm/year (Romanescu and Nistor 2011; Romanescu et al 2012a).…”

Evolution and Development of Ephemeral Gully Erosion in Hilly and Gully Region of the Loess Plateau in China

“…Some studies have used ground-based methods (e.g. field plots, erosion pins, tape method, volume replacement method) to garner relevant ephemeral gully data (Boardman et al, 2015;Casalí et al, 2006;Evans and Lindsay, 2010;Gómez-Gutiérrez et al 2014;Kearney et al, 2018;Perroy et al, 2010;Romanescu et al, 2012;Shen et al , 2021;Wang et al , 2020a;Wang et al , 2021a), but the limited data significantly impacts the reliability of the research conclusions for practical application. Further verification is needed to determine whether the conclusions under small-scale conditions can be extrapolated to larger scales.…”