AI Article Synopsis
- - This study examines sedimentation patterns in four high-altitude lakes in Southern Carpathians, Romania, over the past 200 years, using a unique method to identify whether changes are due to human activity or natural processes.
- - High-resolution chronologies were created using Pb dating and supported by Cs markers, revealing short periods of increased sedimentation, up to five times the average rate, mainly linked to human actions like road construction and significant natural events.
- - The analysis highlighted significant deviations from expected natural sedimentation trends, using a first-order derivative equation to compare changes in sedimentation rates to a baseline from an isolated peat bog, offering insights into the causes of intense sedimentation episodes.
Article Abstract
This study investigates the last two centuries sedimentation dynamics in four high-altitude lakes located in Southern Carpathians, Romania. Furthermore, a novel approach is proposed for identifying the anthropic or natural underlying causes, by comparison of the acceleration of the change in sedimentation rate with a baseline growth rate trend provided by an isolated peat bog. The high-resolution chronologies were developed using the Pb dating technique and the CRS model. Cs alternative time-marker validated the age-depth models and reassured the quality of the results. The results indicated several short-interval high sedimentation events within the lake cores, yielding up to five times the average rate for the investigated period. The cause of the high sedimentation episodes was generally attributed to anthropic activities (primarily road construction) and extreme natural events. A first-order derivative equation was employed to plot the acceleration in the sedimentation rate of the lakes with the peat bog baseline. The discrepancies between the acceleration trends highlighted significant deviations from the natural variation tendencies and provided preliminary data regarding the underlying causes of the intense sedimentation periods.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10791608 | PMC |
| http://dx.doi.org/10.1038/s41598-024-51812-2 | DOI Listing |
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