Babets kvarlevor - En morfologisk och sedimentologisk undersökning av överspolningssediment vid Tobisvik, Simrishamn
(2024) In Examensarbeten i geologi vid Lunds universitet GEOL02 20241Department of Geology
- Abstract
- Storm surges cause elevated water levels and strong waves. This can lead to severe erosion and flooding along the affected coast, which can pose a real threat to coastal communities. As part of the risk assessment, it may be interesting to study washover sediments deposited during previous storm surges. However, in order to distinguish these in the sedimentary archive, their characteristics must be known. In this paper, washover deposited at Tobisvik during the storm Babet, were studied in order to describe their characteristics and to better understand the processes that caused the deposition. This was done by studying the thickness, distribution and sedimentology of the deposit in the field and by analyzing samples taken for grain size... (More)
- Storm surges cause elevated water levels and strong waves. This can lead to severe erosion and flooding along the affected coast, which can pose a real threat to coastal communities. As part of the risk assessment, it may be interesting to study washover sediments deposited during previous storm surges. However, in order to distinguish these in the sedimentary archive, their characteristics must be known. In this paper, washover deposited at Tobisvik during the storm Babet, were studied in order to describe their characteristics and to better understand the processes that caused the deposition. This was done by studying the thickness, distribution and sedimentology of the deposit in the field and by analyzing samples taken for grain size analysis and luminescence profiling. The results showed that the deposit generally consisted of massive sand that thinned landwards. The occurrence of mussel shells also decreased inland. Under the deposit, plants were found that had been flattened and leaned in the direction inland. The characteristics of the deposit differed between the northern and southern parts of the study area, for example, laminations were observed in the northern part. This is probably due to the fact that the southern part was deposited under the inundation regime and the northern part under the wave runup regime. In addition, a possible indication of inundation regime in the form of inverse-grading was identified. However, the results are not sufficiently reliable to determine the different modes of formation and need to be supplemented by further investigations. (Less)
- Abstract (Swedish)
- Stormfloder orsakar förhöjda vattennivåer och kraftiga vågor. Det kan leda till omfattande erosion och översvämning längs med den drabbade kusten, vilket kan utgöra ett verkligt hot mot kustnära samhällen. Som en del av riskbedömningen kan det vara intressant att studera överspolningssediment (washover) som deponerats under tidigare stormfloder. Men för att kunna särskilja dessa ur det sedimentära arkivet måste deras karaktäristik vara känd. I denna uppsats studerades överspolningssediment avsatt vid Tobisvik under stormen Babet, i syfte att beskriva dess särdrag och för att bättre förstå processerna som orsakat depositionen. Detta gjordes genom att avsättningens tjocklek, utbredning och sedimentologi studerades i fält och genom analys av... (More)
- Stormfloder orsakar förhöjda vattennivåer och kraftiga vågor. Det kan leda till omfattande erosion och översvämning längs med den drabbade kusten, vilket kan utgöra ett verkligt hot mot kustnära samhällen. Som en del av riskbedömningen kan det vara intressant att studera överspolningssediment (washover) som deponerats under tidigare stormfloder. Men för att kunna särskilja dessa ur det sedimentära arkivet måste deras karaktäristik vara känd. I denna uppsats studerades överspolningssediment avsatt vid Tobisvik under stormen Babet, i syfte att beskriva dess särdrag och för att bättre förstå processerna som orsakat depositionen. Detta gjordes genom att avsättningens tjocklek, utbredning och sedimentologi studerades i fält och genom analys av prover tagna för kornstorleksanalys och luminiscensprofilering. Resultatet visade att avlagringen generellt bestod av massiv sand som tunnades ut inåt land. Förekomsten av musselskal minskade också inåt land. Under avlagringen återfanns växter som plattats till och lutade i riktning inåt land. Avlagringens karaktäristika skiljde sig åt mellan den norra och södra delen av undersökningsområdet, till exempel observerades lamineringar i den norra delen. Detta torde bero på att den södra delen avsatts under inundation regime och den norra under wave runup regime. Dessutom identifierades även en eventuell indikator för inundation regime i form av reversgradering. Resultaten är dock inte tillräckligt säkra för att kunna fastslå de olika bildningssätten och behöver kompletteras med ytterligare undersökningar. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9160764
- author
- von Vultée, Anton LU
- supervisor
- organization
- course
- GEOL02 20241
- year
- 2024
- type
- M2 - Bachelor Degree
- subject
- keywords
- Överspolning, överspolningssediment, stormflod, Simrishamn, overwash, washover deposits, storm surge.
- publication/series
- Examensarbeten i geologi vid Lunds universitet
- report number
- 683
- language
- Swedish
- id
- 9160764
- date added to LUP
- 2024-06-10 11:33:37
- date last changed
- 2024-06-11 09:36:02
@misc{9160764,
abstract = {{Storm surges cause elevated water levels and strong waves. This can lead to severe erosion and flooding along the affected coast, which can pose a real threat to coastal communities. As part of the risk assessment, it may be interesting to study washover sediments deposited during previous storm surges. However, in order to distinguish these in the sedimentary archive, their characteristics must be known. In this paper, washover deposited at Tobisvik during the storm Babet, were studied in order to describe their characteristics and to better understand the processes that caused the deposition. This was done by studying the thickness, distribution and sedimentology of the deposit in the field and by analyzing samples taken for grain size analysis and luminescence profiling. The results showed that the deposit generally consisted of massive sand that thinned landwards. The occurrence of mussel shells also decreased inland. Under the deposit, plants were found that had been flattened and leaned in the direction inland. The characteristics of the deposit differed between the northern and southern parts of the study area, for example, laminations were observed in the northern part. This is probably due to the fact that the southern part was deposited under the inundation regime and the northern part under the wave runup regime. In addition, a possible indication of inundation regime in the form of inverse-grading was identified. However, the results are not sufficiently reliable to determine the different modes of formation and need to be supplemented by further investigations.}},
author = {{von Vultée, Anton}},
language = {{swe}},
note = {{Student Paper}},
series = {{Examensarbeten i geologi vid Lunds universitet}},
title = {{Babets kvarlevor - En morfologisk och sedimentologisk undersökning av överspolningssediment vid Tobisvik, Simrishamn}},
year = {{2024}},
}