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1.
S. Miko G. Koch S. Mesić M. Šparica-Miko M. Šparica R. Čepelak A. Bačani P. Vreča T. Dolenec S. Bergant 《Environmental Geology》2008,55(3):517-537
Due to their balneotherapeutic features, the organic-rich sediments in Makirina Cove are an important source of healing mud.
An environmental geochemistry approach using normalization techniques was applied to evaluate the anthropogenic contribution
of trace metals to sediments used as healing mud. Sediment geochemistry was found to be associated with land-use change and
storm events, as well as with proximity of a road with heavy traffic in the summer months. Local valley topography preferentially
channels lithogenic and pollutant transport to the cove. Concentrations and distribution of trace metals indicate lithogenic
(Ni, Cr, Co) and anthropogenic (Pb, Cu, Zn and Se) contributions to the sediments. The calculation of enrichment factors indicates
a moderate (EFs between 2–3.5) input of anthropogenic Cu and Pb in surficial sediments to a depth of 10 cm. Patients using
the Makirina Cove sediments as healing mud could be to some extent exposed to enhanced uptake of metals from anthropogenic
sources via dermal contact. 相似文献
2.
Mateja Jemec Auflič Matjaž Mikoš Timotej Verbovšek Željko Arbanas Snježana Mihalić Arbanas 《Landslides》2018,15(2):381-384
The 3rd Regional Symposium on Landslides in the Adriatic-Balkan Region (3rd ReSyLAB) was held in Ljubljana, Slovenia, from June 11 to 13, 2017, with 70 participants from nine countries (Austria, Bosnia and Hercegovina, Croatia, Czech Republic, Italy, Republic of Macedonia, Serbia, Slovenia, Spain)—scientists, engineers, researchers, students, experts, politicians, and other decision-makers working in the area of landslide risk reduction in the region. The ReSyLAB is a biannual event organized by the Adriatic-Balkan Network of the International Consortium on Landslides (ICL ABN). Being an important form of activities of this ICL regional network comprising of six ICL members from four countries, it was also a contribution of the International Consortium on Landslides (ICL) to the implementation of the Sendai Framework for Disaster Risk Reduction 2015–2030. This article reports on the main outcomes of the 3rd ReSyLAB Symposium. Altogether, 41 abstracts were published in the symposium book of abstracts, and the symposium proceedings with over 20 reviewed full papers are under preparation to be printed early in 2018. During the 3rd ReSyLAB, a five invited keynote lectures have been presented, and 28 oral presentations are given to the audience. An important part of the symposium was a Round Table entitled “Enhancing cooperation between landslide research community and end users.” On the last day of the symposium, over 30 experts participated in two post-symposium study tours in Slovenia. 相似文献
3.
Geochemical background in soils: a linear process domain? An example from Istria (Croatia) 总被引：1，自引：1，他引：0
Definition of geochemical background in exploration and environmental geochemistry has always been regarded as contingent
upon scale and investigated locality but mostly under assumption that hosts of processes that produce the data more or less
conform individually to Gaussian law of “central tendencies”. Recently, understanding of pedogenesis as synergetic process
being characterized by non-linear dynamics renders thermodynamic approach directly applicable in assessment of geochemical
thresholds, with concepts of linearity and normality set alongside in solving the problems of soil geochemistry. Seen from
this perspective the work is an attempt to relate conceptual fundamentals of non-linear dynamical theory to basic statistical
methods in order to elucidate the nature and origins of element subpopulations hidden in the original geochemical data from
the soils of Istrian Peninsula (western Croatia). To this purpose the two major groups of soils were selected for analysis
depending on the type of bedrock as one of the main soil-forming factors. Geochemical data were subjected to the trimming
procedure by which the outliers were removed from the total data collective and attributed to non-linear causes precluding
simple cause-and-effect relationships as the sine qua non of Gaussian distribution. Geochemical background is then defined as the normal range of data of the remaining (trimmed) dataset
indicating the “thermodynamic branch” of the specific soil processes as opposed to outliers being described as dissipative
structures. 相似文献
4.
In this report, we present the situation in Slovenia, Europe with regard to natural hazards, emphasizing land-sliding problems.
Furthermore, we shortly present the University of Ljubljana and the Faculty of Civil and Geodetic Engineering as the new member
of the ICL that was selected to be the World Center of Excellence on Landslide Risk Reduction for the period of 2008–2013
with the project entitled “Mechanisms of landslides in over-consolidated clays and flysch” in the Activity scale and targeted
region as “National.” Some preliminary results of this project are shortly presented at the end. 相似文献
5.
Composition and origin of organic matter in surface sediments of Lake Sarbsko: A highly eutrophic and shallow coastal lake (northern Poland) 总被引：1，自引：0，他引：1
Micha? Woszczyk Achim Bechtel Reinhard Gratzer Maciej J. Kotarba Miko?aj Kokociński Jens Fiebig Roman Cie?liński 《Organic Geochemistry》2011,42(9):1025-1038
We present an organic geochemical study of surface sediments of Lake Sarbsko, a shallow coastal lake on the middle Polish Baltic coast. The aim was to provide evidence concerning the origin of the organic matter (OM) and its compositional diversity in surface deposits of this very productive, highly dynamic water body. The content and composition of the OM in the bottom sediments were investigated at 11 sampling stations throughout the lake basin. OM sources were assigned on the basis of bulk indicators [total organic carbon (TOC), total nitrogen (TN), δ13CTOC and δ15N and extractable OM yield], biomarker composition of extractable OM and compound-specific C isotope signatures. The source characterization of autochthonous compounds was verified via phytoplankton analysis. The distribution of gaseous hydrocarbons in the sediments, as well as temporal changes in lake water pH, the concentration of DIC (dissolved inorganic carbon) and δ13CDIC were used to trace OM decomposition.The sedimentary OM is composed mainly of well preserved phytoplankton compounds and shows minor spatial variability in composition. However, the presence of CH4 and CO2 in the bottom deposits provides evidence for microbial degradation of sedimentary OM. The transformation of organic compounds in surface, bottom and pore waters via oxidative processes influences carbonate equilibrium in the lake and seasonally favours precipitation or dissolution of CaCO3.The data enhance our understanding of the relationships between the composition of sedimentary OM and environmental conditions within coastal ecosystems and shed light on the reliability of OM proxies for environmental reconstruction of coastal lakes. 相似文献
6.
New photoelectric observations of CK Bootis (a binary star suspected of a spot activity) obtained in 1988 at Mt. Suhora Observatory are presented. On the basis of the spectroscopic observations made in May 1990 at the Toru University Observatory the spectral class F6V of the primary component was estimated. The physical parameters of the system with a circular spot were derived making use of the Wilson-Devinney code. 相似文献
7.
Net carbon emissions from the biosphere differ from fossil-fuel based emissions in that: (i) a large proportion of biospheric carbon exchange is not under direct human control; (ii) land-use decisions often have only a small short-term effect on net emissions, but a large long-term effect; and (iii) biospheric carbon exchange is potentially reversible. Because of these differences, carbon accounting approaches also need to be different for fossil-fuel and biosphere-based emissions. Recognising that, the international negotiators at COP 7 adopted a range of guiding principles for accounting for biospheric carbon exchange, including: that accounting excludes removals resulting from (a) elevated carbon dioxide concentrations above pre-industrial level; (b) indirect nitrogen deposition; and (c) the dynamic effects of age structure resulting from activities and practices before the reference year. In this paper, we highlight some of the challenges in biospheric carbon accounting for Canada, the U.S.A, New Zealand and Australia, four nations for which biospheric net carbon exchange is large relative to fossil-fuel based emissions. We discuss an accounting scheme that is based on assessing changes in average carbon stocks due to changes in land use. That scheme is tailored to the special needs of biospheric carbon management and is consistent with the accounting principles adopted at COP 7. The paper shows how the accounting scheme would resolve many of the biospheric carbon accounting anomalies identified for the four nations we studied. 相似文献
8.
Can Trees Buy Time? An Assessment of the Role of Vegetation Sinks as Part of the Global Carbon Cycle
Miko U. F. Kirschbaum 《Climatic change》2003,58(1-2):47-71
Atmospheric CO2 concentrations can be reduced by storing carbon in vegetation. However, this lowers the concentration gradient between the atmosphere and other potential carbon reservoirs, such as the oceans, and thereby reduces the subsequent inherent rate of removal of CO2 from the atmosphere. Hence, storage of carbon in temporary reservoirs can reduce atmospheric CO2 concentrations in the short term, but if the carbon is released again, it will increase concentrations in the long term. It must, therefore, be considered when, or, indeed whether, to store carbon in vegetation sinks.To determine an optimal strategy, the exact nature of climate-change impacts needs to be considered first. Impacts can be mediated by:1. the direct and instantaneous effect of CO2 and its associated temperature;2. the rate of change in CO2 and its associated temperature;3. the cumulative effect of CO2 and its associated temperature.Carbon stored in permanently maintained vegetation sinks can lower atmospheric CO2 concentrations, but this can be done most effectively if sequestration occurs close to the time when atmospheric concentrations are to be lowered. Similarly, maximal rates of change can be most effectively reduced by carbon sequestration close to the time of anticipated maximal rates of change. For reducing impacts via cumulative forcing, however, early sink activity would be more effective than delayed activity.Temporary carbon stores would only be beneficial for climate change impacts related to the cumulative impact of CO2, but it could even worsen impacts mediated via the instantaneous effect of temperature or those related to the rate of change. Hence, the planting of trees is only beneficial in reducing climate-change impacts if the most serious impacts are those related to the cumulative effect of increased temperature. If other impacts are more serious, then the planting of trees would bring greater benefits if it is delayed until closer to the time when the most severe impacts are to be expected. However, if serious land degradation would result from deforestation, or from a failure to plant trees in the near future, then trees should still be planted in order to maximise the amount of carbon stored on land. 相似文献
9.
The comparison of two multiple regression models is based on the assumption that geochemical composition of the drainage basin
alluvial sediments is derived primarily from the underlying bedrock lithology. The parent material is integrated with both
stream sediment and overbank sediment geochemistry via the two essentially different approaches as regards the drainage basin
geomorphological data: (1) as the relative area of influence representing a portion of the catchment basin occupied by a specific
rock type and (2) as the relative “line” of influence representing a narrow zone of the underlying bedrock traversed by the
perennial streams which form the active stream network. The model comparison is established on the goodness-of-fit test for
both experimental designs and for the same set of data. Both experiments converge on the linear approach as the more appropriate
model in evaluating the lithologic influence on the analysed sample media in small mountainous watersheds. 相似文献
10.
The Stogovce landslide in SW Slovenia triggered during the September 2010 extreme rainfall event 总被引：4，自引：4，他引：0
Ana Petkov?ek Rok Fazarinc Marko Ko?evar Matej Ma?ek Bojan Majes Matja? Miko? 《Landslides》2011,8(4):499-506
From September 16 to September 20, 2010, a cold weather front went across Slovenia. A heavy 4-day rainfall totaling between
300 and 520 mm caused large floods and triggered numerous rainfall-induced landslides. The damage due to the floods and landslides
is estimated over 250 million Euros. One of the largest landslides covering the area of approximately 15 ha was triggered
on flysch bedrock, just below a limestone overthrust zone. The sliding material properties, the inclinations of the slope,
and the water catchment area indicate that the landslide may transform into a fast moving debris flow. The necessary protective
measures were taken to protect inhabitants and the infrastructure against the disaster. The Stogovce landslide is one of the
numerous rainfall-induced landslides that have occurred in Slovenia on flysch bedrock in the last 10 years. It proves that
landslide risk on flysch territory is increasing. Special program of monitoring and protective measures will have to be developed
in near future to protect densely populated areas against landslides as a consequence of weather extremes. 相似文献