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ANALYSING RIVERBED MORPHOLOGY AS A RESPONSE TO CHANGES OF GEOLOGICAL AND NEOTECTONIC CONDITIONS: A CASE STUDY OF THE OĽŠAVA RIVER

100%

Barabas D., Tkáč M.

Quaestiones Geographicae

2019

vol. 38

issue 3

The morphological examination of the Slovak Oľšava River channel and valley parameters is based on observation of changes in the troughs’ longitudinal profile. While the relationship between valley and channel parameters has previously been researched, establishment of the diverse conditions in trough formation enables better understanding of the basin/riverbed relationship. Our research is based on field measurements of representative sections of nine segments defined by changes in the longitudinal profile. The field measurements were performed in autumn months during a low water period to ensure the best conditions for repeated measurements. Significantly, as much as 75% asymmetry of the measured flow encourages the assumption of strong tectonic influence on the riverbed formation. While the difference between the assumed continuous changes of measured parameters and the actual measured or evaluated parameters remains a matter of interpretation, the detected anomalies enable interpretation of the parameters’ relationships. The river bed and the valley morphological parameters were evaluated on the model of The Olšava River basin which drains the eastern part of the Košická kotlina Basin (the Toryská pahorkatina Upland). The location of the basin at the foot of the Slanské vrchy Mts. is an important factor in the formation of the river network asymmetries. Both the Neogene contact between the Slanské vrchy Hills neo-volcanites and the Toryská pahorkatina Upland and the neo-tectonics influenced the change in morphological parameters in the valley’s longitudinal and transverse profile and the Oľšava river bed. Our terrain works comprised length and width measurements of the bars, their positions in the river bed, the width and depth of the channel and the type of section riffle. Available maps enabled calculation of the following; ratio of valley height to width, average gradient of the section, stream gradient index, average channel segment slope, the degree of sinuosity and the highest observed correlation between slope, river segment type (0.9576) and the width and type river reach (−0.9089). High correlation coefficient values were recorded for the valley height and width ratio, the type of river section, the water area and the total river bed width and area.

Analýza jako prostředek porozumění hudebnímu dílu. Studie ke genezi tektonické analýzy Karla Janečka

72%

Hons M.

Hudební věda (Musicology)

2023

vol. 60

issue 3

278-300

Karel Janeček’s tectonic analysis is one of the most elaborate analytical methods, set apart from others in terms of both its premises and its aims. Apart from its concern with the study of musical structure and form, it is likewise oriented towards probing into certain aspects of a composer’s creative thinking. Another aspect which distinguishes it from earlier methods is its prime focus on psychological-aesthetic effects of performed music, coupled with the aspiration to shed light on a musical work’s genesis by way of partial reconstructions of the compositional process. Janeček’s progress towards this analytical approach dates back to his student years when he became acquainted with the thoughts and writings of leading exponents of Czech music theory and scientific research. Most relevantly in that respect, he drew on theories evolved by the composer and scholar, Leoš Janáček, and the psychologist, aesthetician and composer, Otakar Zich. Their reasonings on the perception and apperception of music can indeed be regarded as authentic sources of the systemic groundwork of Karel Janeček’s tectonic theory. Apart from revealing these particular influences, the present study also purports to reflect on how tectonic analysis can contribute in the process of apperception and understanding of a musical work.

Tektonická analýza Karla Janečka představuje jednu z nejnáročnějších analytických metod, která se odlišuje svými východisky a cíli. Kromě výzkumu hudební struktury a formy směřuje k poznání některých aspektů kompozičního myšlení tvůrce. Od předchozích metod se odlišuje také tím, že vychází z psychologicko-estetického působení znějící hudby a snaží se poodkrýt genezi díla formou dílčích rekonstrukcí kompozičního procesu. K tomuto analytickému přístupu se Janeček propracovával od studentských let, kdy se seznamoval s názory a spisy významných osobností české hudební teorie a vědy. Ty nejpodstatnější se týkají skladatele a teoretika Leoše Janáčka a psychologa, estetika a skladatele Otakara Zicha. Jejich názory na vnímání (percepci) a osvojování (apercepci) hudby je možné označit jako přímé zdroje systematiky tektoniky Karla Janečka. Kromě odhalování těchto vlivů je cílem této studie také zamyšlení nad problémem, jak může tektonická analýza přispět k osvojení a porozumění hudebnímu dílu.

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1 Hudební věda (Musicology)

1 Quaestiones Geographicae

1 Barabas D.

1 Hons M.

1 Tkáč M.

1 2023

1 2019

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ANALYSING RIVERBED MORPHOLOGY AS A RESPONSE TO CHANGES OF GEOLOGICAL AND NEOTECTONIC CONDITIONS: A CASE STUDY OF THE OĽŠAVA RIVER

Analýza jako prostředek porozumění hudebnímu dílu. Studie ke genezi tektonické analýzy Karla Janečka