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Article Reference A large meteoritic event over Antarctica ca. 430 ka ago inferred from chondritic spherules from the Sør Rondane Mountains
Large airbursts, the most frequent hazardous impact events, are estimated to occur orders of magnitude more frequently than crater-forming impacts. However, finding traces of these events is impeded by the difficulty of identifying them in the recent geological record. Here, we describe condensation spherules found on top of Walnumfjellet in the Sør Rondane Mountains, Antarctica. Affinities with similar spherules found in EPICA Dome C and Dome Fuji ice cores suggest that these particles were produced during a single-asteroid impact ca. 430 thousand years (ka) ago. The lack of a confirmed crater on the Antarctic ice sheet and geochemical and 18O-poor oxygen isotope signatures allow us to hypothesize that the impact particles result from a touchdown event, in which a projectile vapor jet interacts with the Antarctic ice sheet. Numerical models support a touchdown scenario. This study has implications for the identification and inventory of large cosmic events on Earth.
Located in Library / RBINS Staff Publications 2021
Article Reference A New Species of the Genus Thinophilus Wahlberg from the River Banks of the Mekong River in Thailand (Diptera: Dolichopodidae)
Located in Library / RBINS Staff Publications 2017
Article Reference Cross-taxa generalities in the relationship between population abundance and ambient temperatures.
Located in Library / RBINS Staff Publications 2017
Article Reference Carbon and nitrogen isotopic ratios in archaeological and modern Swiss fish as possible markers for diachronic anthropogenic activity in freshwater ecosystems
The aim of this study is to investigate isotopic variability in archaeological (n=85) and modern (n=29) freshwater fish specimens from Switzerland. Here, carbon (δ13C) and nitrogen (δ15N) stable isotope ratio analysiswas performed on bone collagen samples of pike (Esox lucius), perch (Perca fluviatilis), barbel (Barbus barbus), roach (Rutilus rutilus) and carp (Cyprinus carpio) fromeleven archaeological (11th to 18/19th centuries CE) andmodern sites. The archaeological vs. modern fish data revealed significant isotopic differences for pike, perch and barbel (δ13Cp≤ 0.03; δ15Np≤ 0.008), and provides possible evidence for a temporal change in Swiss aquatic ecosystems from Medieval to modern times. In comparison to archaeological fish (δ13C mean ± SD; −23.3 ± 1.6‰; δ15N mean ± SD; 8.3 ± 1.8‰), the modern fish samples show decreased δ13C and increased δ15N values (δ13C mean± SD; −27.4 ± 2.3‰; δ15N mean± SD; 12.5± 4.1‰) that can be associated with anthropogenic effects: fossil fuel combustion, deforestation and organic waste in the form of sewage and fertilizers. The isotopic signatures of archaeological fish remains indicate a local fishery practice, but also the exploitation of distant fishing grounds and freshwater fish transportation. Furthermore, a diachronic isotopic trend is observed in young perch from sites in Basel, dating between the 12th and 15/16th centuries CE, and the isotopic data from the Rhine freshwater fish (18/19th century CE) suggests that a significant shift in the river's trophic state was possibly caused by organic pollution fromurban and industrial wastewater. This retrospective research illustrates possible natural processes and human activitieswhich can cause differences in fish stable isotope data and highlights the ability to elucidate changes in past bodies of water. Furthermore, this study provides an interpretative framework for additional palaeoenvironmental studies and modern restoration projects focused on freshwater ecosystems.
Located in Library / RBINS Staff Publications 2016
Article Reference Pyrops auratus, a new lanternfly from the Philippines and taxonomic note on Bornean P. gunjii (Satô & Nagai, 1994) (Hemiptera: Fulgoromorpha: Fulgoridae)
Located in Library / RBINS Staff Publications 2021
Article Reference A review on onshore tsunami deposits along the Atlantic coasts.
Located in Library / RBINS Staff Publications 2021
Inbook Reference Landschaftsentwicklung und Landnutzung im Segbachtal bei Mendig.
Located in Library / RBINS Staff Publications 2021
Inbook Reference Holocene climate variability of Mesopotamia and its impact on the history of civilisation.
Located in Library / RBINS Staff Publications 2021
Article Reference Syn- and post-eruptive gully formation near the Laacher See volcano
Located in Library / RBINS Staff Publications 2021
Article Reference Experiments on tsunami induced boulder transport – A review
Located in Library / RBINS Staff Publications 2021