A5073225142- Geology and Paleoclimatology Research
- Marine and environmental studies
- Aeolian processes and effects
- Geological formations and processes
- Groundwater and Isotope Geochemistry
- Coastal wetland ecosystem dynamics
- Maritime and Coastal Archaeology
- Toxic Organic Pollutants Impact
- Hydrocarbon exploration and reservoir analysis
- Coastal and Marine Dynamics
- Heavy metals in environment
- Ecology and biodiversity studies
- Integrated Water Resources Management
- Therapeutic Uses of Natural Elements
- Radioactive contamination and transfer
- Ancient and Medieval Archaeology Studies
- Isotope Analysis in Ecology
- Radioactivity and Radon Measurements
- Hydrology and Sediment Transport Processes
- Soil erosion and sediment transport
- Diatoms and Algae Research
- Geochemistry and Elemental Analysis
- Plant Ecology and Soil Science
- Aquatic Ecosystems and Phytoplankton Dynamics
- Aquatic and Environmental Studies
Tallinn University
2007-2024
Sciences Po Bordeaux
2018
This study presents the results of an experimental investigation five different pre- treatment methods for measuring grain-size distribution allochthonous siliclastic matter in cohesive organic-rich sediments and some comparisons with mineral-rich sediments. The loss on ignition (LOI) were fastest eliminating organic but here a problem aggregate formation may arise. Oxidation H2O2 was time resource consuming. Getting reproducible hard reaction not completed analysis. Therefore samples also...
Sandy beaches high in recreation value make up 16% of the over 4000 km long shoreline Estonia. The shore processes associated with climate change have remarkably accelerated recent decades. Many sandy shores suffered from strong erosion, including an excellent former beach at Valgeranna. jetties, which were built 1860s to protect navigation channel Port Pärnu clogging, prevented natural sediment transport along coast south north. At same time, is expanding, and part sand accumulates storms...
This paper provides a methodological protocol for measuring diameter and other properties of mineral sand grains using an image analysis technique. The aeolian influx (ASI) from coastal bogs has been used to reconstruct changes in the past storminess. However, concentrations peat deposits, which ASI is calculated, tend be low, sieving laser diffractometry cannot applied. Manual counting sands under microscope time-consuming less efficient because possible human errors. describes method our...
Vilumaa, K.; Tõnisson, H.; Sugita, S.; Buynevich, I.V.; Kont, A.; Muru, M.; Preusser, F.; Bjursäter, Vaasma, T.; Vandel, E.; Molodkov, A., and Järvelill, J.I., 2016. Past extreme events recorded in the internal architecture of coastal formations Baltic Sea region. In: Vila-Concejo, Bruce, Kennedy, D.M., McCarroll, R.J. (eds.), Proceedings 14th International Coastal Symposium (Sydney, Australia). Journal Research, Special Issue, No. 75, pp. 775–779. Coconut Creek (Florida), ISSN 0749-0208.The...
This research uses a comparison of the sediment record Lake Martiska (NE Estonia) with well-documented historical changes in human impact to identify factors dominantly affecting lithological composition, and accumulation heavy metals other microelements into sediments. To this end, comprehensive lithological-geochemical studies upper were undertaken 1986 repeated 2003 2005. Oil shale mining processing heavily impacted area via atmospheric pollution groundwater extraction. As result fly-ash...
Holocene relative sea level changes and palaeogeography of the uplifting Tihu ridge-swale beach system in functionally tideless Baltic Sea were reconstructed using airborne LiDAR elevation data, ground-penetrating radar surveys, sedimentological proxies, recent models Fennoscandian uplift due to glacial isostatic adjustment, GIS-based terrain modelling. Considering that aeolian contribution ridge growth was relatively small uniform along studied profiles, it possible utilize an age...
The study focuses on the current state of curative mud deposits in Estonia as 2022, examining changes over past decade and providing essential information quality. Total 64 samples were collected marking first investigation into hazardous substances such phenols, petroleum products, pesticides. encompassed analyses organic mineral matter content, grain size, microbiology, heavy metal concentrations, totalling 1649 measurements. Comparisons with previous data revealed stable concentrations...
Abstract The present study discusses results of heavy mineral analyses and radioactivity beach sediments Lake Peipsi. Such are commonly done globally, but had not yet been conducted for the fourth largest lake in Europe. average content Peipsi along northern western coast is higher than usual Estonian coastal Quaternary sediments. Concomitantly, elevated levels have measured several places, with highest concentrations observed at Alajõe (1885.5 Bq/kg), which over five times more recommended...
Traditionally the elevated concentrations of PAHs in bottom sediments Lake Peipsi are explained by influence oil shale industry.To estimate role Narva Power Plants (Narva PP) deposition PAHs, we investigated 210 Pb dated sediment core from Pihkva, where industry should be minimal.The distribution 15 individual was established, observed levels ΣPAHs ranged between 75 and 345 ng/g.PAHs with 4-5 rings implying petrogenic activity accounted for 74 to 87% ΣPAHs, which is higher than a similar...
A multi-indicator paleolimnological study of sediments from Lake Ķūži (central Latvia) was used to obtain a comprehensive record environmental changes in the Holocene. Periodicity and main drivers (lake basin development, catchment properties, climate, human activities) sedimentary studied. In order comprehend whole-lake sedimentation during Holocene, detailed multiindicator central part lake integrated with records sediment mass accumulation rates four cores different parts GPR...
Bottom sediments of Lake Peipsi proper were mapped in the 1970s’ from research vessel but for technical reasons near shore areas not investigated. The present work is first attempt to fill this gap. Based on surface sediment mapping whole lake basin, we identified 11 key littoral zone and provided a detailed survey sediments. By grain-size, samples can be separated into three groups: coarse-grained (predominantly sands southern part lake), fine-grained (mainly silts) clayey sands, both...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
This study aims to reconstruct the changes in storminess during past 7600 years northeastern Baltic Sea region. For reconstructions, aeolian sand influx (ASI) coastal peat bog deposits was applied as an indicator of storminess. We analyzed cores from four bogs western and northern areas Estonia: Hiiumaa N, SW, Saaremaa Juminda sites covered 3700, 3750, 2400, 8400 years, respectively. The sediment chronologies were established using 36 14 C dates. Image-analysis method ( ImageJ) used count...
Dans cette étude, nous donnons un aperçu des études paléolimnologiques qui révèlent comment les lacs estoniens et paysages entourent se sont développés au cours de l'Holocène. L'étude concentre principalement sur menées par l'Institut d'Écologie l'Université Tallinn. Le développement leur environnement écologique peut diviser sommairement en deux grandes périodes : l'étape naturelle allant l'émergence après le retrait glaciers continentaux aux signes premières perturbations d'origine...