J 2016

The late Little Ice Age landslide calamity in North Bohemia: Triggers, impacts and post-landslide development reconstructed from documentary data (case study of the Kozí vrch Hill landslide)

RAŠKA, Pavel, Vilém ZÁBRANSKÝ, Rudolf BRÁZDIL and Jana LAMKOVÁ

Basic information

Original name

The late Little Ice Age landslide calamity in North Bohemia: Triggers, impacts and post-landslide development reconstructed from documentary data (case study of the Kozí vrch Hill landslide)

Authors

RAŠKA, Pavel (203 Czech Republic), Vilém ZÁBRANSKÝ (203 Czech Republic), Rudolf BRÁZDIL (203 Czech Republic, guarantor, belonging to the institution) and Jana LAMKOVÁ (203 Czech Republic)

Edition

Geomorphology, Elsevier Science BV, 2016, 0169-555X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Earth magnetism, geodesy, geography

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.958

RIV identification code

RIV/00216224:14310/16:00087756

Organization unit

Faculty of Science

UT WoS

000369451100008

Keywords in English

Landslide reconstruction; Documentary data; Little Ice Age; North Bohemia

Tags

Změněno: 14/4/2017 14:56, Ing. Andrea Mikešková

Abstract

V originále

The beginning of the 1770s in the Czech Lands is well documented for its meteorological extremes and their social impacts. However, the effects of these extremes on geomorphic systems and on landslide occurrence and activity in particular have been minimally studied. In this paper, we use a complex set of written and iconographic documentary data to reconstruct the landslide calamity in North Bohemia, with a detailed case study of the Kozí vrch Hill landslide. The landslide calamity of 1770 is the oldest known landslide calamity in this region, including 14 documented events; and its reconstructionmay therefore provide important data on landslide frequency, triggers, and impacts during the adverse weather patterns in the last part of the Little Ice Age (LIA). We focus on a case study of the Kozí vrch Hill landslide, and we use the documentary evidence and field techniques to reconstruct its location, extent, topography, kinematics, and triggers. Based on precipitation indices and weather descriptions, the extremely wet and rainy preceding year and the 1769/1770 winter were the major triggering factors that resulted inwater saturation of Neogene volcaniclastics underlying the basalt lava flows and their subsequent collapse. Furthermore, we analyse the post-landslide terrain transformation and land use patterns during the 240 years following the landslide to illustrate the persistence of particular landslide features.Weconclude that the major transformations, which obscured most of the landslide features, occurred in only the last 50–60 years. Finally, we discuss the role of documentary data and the current methodological advances in their use for the reconstruction of landslide frequency and impacts during the LIA.

Links

GAP209/11/0956, research and development project
Name: Globální a regionální modelové simulace klimatu ve střední Evropě v 18.-20. století v porovnání s pozorovaným a rekonstruovaným klimatem
Investor: Czech Science Foundation