New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland
The results of grain size distribution of loess units are suitable for the study of past climate change. There are many methods for the analysis of the grain size, but clustering methods have not been used before. In this article, a new approach in the sediment research, the k-median method was used...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-09-01
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| Series: | Open Geosciences |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/geo-2020-0044 |
| _version_ | 1819147028225064960 |
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| author | Krawczyk Marcin Wieczorek Małgorzata |
| author_facet | Krawczyk Marcin Wieczorek Małgorzata |
| author_sort | Krawczyk Marcin |
| collection | DOAJ |
| description | The results of grain size distribution of loess units are suitable for the study of past climate change. There are many methods for the analysis of the grain size, but clustering methods have not been used before. In this article, a new approach in the sediment research, the k-median method was used. This method separates the grain size classes of the youngest loess units of three loess-soil profiles in Poland: Biały Kościół, Złota and Tyszowce. In the analysis, only the content for the loess silt fraction (range from 4 to 63 µm) was used. This allowed eliminating the admixtures of sandy and clay fraction, considered as secondary material. For the purposes of this analysis, silt fractions were divided into smaller units using a 1/4 phi interval, resulting in 16 new subfractions. The grain size data from three profiles were combined into one data set. As a result, four classes with a similar internal of grain structure were obtained. The separated classes showed the sedimentological variability of the sediment well. It has been shown that the k-median method can be used to classify loess in a fast and objective way. |
| first_indexed | 2024-12-22T13:23:18Z |
| format | Article |
| id | doaj.art-6cc5bb7a310d432ca94044fe4e619983 |
| institution | Directory Open Access Journal |
| issn | 2391-5447 |
| language | English |
| last_indexed | 2024-12-22T13:23:18Z |
| publishDate | 2020-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Geosciences |
| spelling | doaj.art-6cc5bb7a310d432ca94044fe4e6199832022-12-21T18:24:24ZengDe GruyterOpen Geosciences2391-54472020-09-0112186687510.1515/geo-2020-0044geo-2020-0044New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in PolandKrawczyk Marcin0Wieczorek Małgorzata1University of Wrocław, Institute of Geography and Regional Development, Pl. Uniwersytecki 1, 50-137 Wrocław, PolandUniversity of Wrocław, Institute of Geography and Regional Development, Pl. Uniwersytecki 1, 50-137 Wrocław, PolandThe results of grain size distribution of loess units are suitable for the study of past climate change. There are many methods for the analysis of the grain size, but clustering methods have not been used before. In this article, a new approach in the sediment research, the k-median method was used. This method separates the grain size classes of the youngest loess units of three loess-soil profiles in Poland: Biały Kościół, Złota and Tyszowce. In the analysis, only the content for the loess silt fraction (range from 4 to 63 µm) was used. This allowed eliminating the admixtures of sandy and clay fraction, considered as secondary material. For the purposes of this analysis, silt fractions were divided into smaller units using a 1/4 phi interval, resulting in 16 new subfractions. The grain size data from three profiles were combined into one data set. As a result, four classes with a similar internal of grain structure were obtained. The separated classes showed the sedimentological variability of the sediment well. It has been shown that the k-median method can be used to classify loess in a fast and objective way.https://doi.org/10.1515/geo-2020-0044l1ll1 loess unitloess covers in polandk-median methodgrain-size distribution |
| spellingShingle | Krawczyk Marcin Wieczorek Małgorzata New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland Open Geosciences l1ll1 loess unit loess covers in poland k-median method grain-size distribution |
| title | New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland |
| title_full | New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland |
| title_fullStr | New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland |
| title_full_unstemmed | New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland |
| title_short | New approach of clustering of late Pleni-Weichselian loess deposits (L1LL1) in Poland |
| title_sort | new approach of clustering of late pleni weichselian loess deposits l1ll1 in poland |
| topic | l1ll1 loess unit loess covers in poland k-median method grain-size distribution |
| url | https://doi.org/10.1515/geo-2020-0044 |
| work_keys_str_mv | AT krawczykmarcin newapproachofclusteringoflatepleniweichselianloessdepositsl1ll1inpoland AT wieczorekmałgorzata newapproachofclusteringoflatepleniweichselianloessdepositsl1ll1inpoland |