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  • Articles  (25)
  • earthquake  (13)
  • salt lakes  (12)
  • 1995-1999  (25)
  • Geography  (25)
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  • Articles  (25)
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  • 1
    ISSN: 1573-0840
    Keywords: slope instability ; static analysis ; dynamic analysis ; earthquake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract The paper describes a method for the evaluation of slope instability for urban planning purposes, applied in the test area ‘Oltre Po Pavese’ (Regione Lombardia, Italy). A statistic and a probabilistic approach have been applied for the estimation of landslide activations and for the definition of potentially unstable areas. The displacement has been obtained through a simplified dynamic analysis, using deterministic methods: first the critical horizontal acceleration coefficient (Kc) has been evaluated, second the displacement has been calculated using the Kc values and the seismic input values, such as peak ground acceleration (PGA) and Arias intensity (Ia), through empirical relationships between displacement and Ia values for different Kc values. The results can be used by the regional government to give to the municipalities of the area a guide for the selection of the zones to be studied with future and more detailed analyses.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 6 (1997), S. 67-81 
    ISSN: 1573-8590
    Keywords: Aral Sea ; saline ; salt lakes ; sedimentation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract A survey of recent bottom sediments in the Northern Aral Sea wasundertaken to elucidate the main direction of the alteration ofsedimentation processes as a result of the significant decrease in the levelof the sea from the beginning of the 1960s. Investigations were carried outin August–September 1991 from on board helicopter MI-8 MTV-1 which wasequipped with the navigation system "LORAN-OMEGA". Sediments were sampledby means of gravity coring and grab sampling. The frequency of sampling wasabout 1 station per 10 km2. At several sites, watersamples were collected. Grain-size analysis was undertaken and themineralogy of the sediments was determined by optical means, using an SEMenergy dispersive X-ray microanalysis, and X-ray diffractometry using aDRON-2.0 diffractometer.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 6 (1997), S. 91-105 
    ISSN: 1573-8590
    Keywords: coastal lagoons ; ecological modelling ; salt lakes ; sustainable management
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The modelling approach for sustainablemanagement is outlined, the results of managementscenarios obtained by the modelling studies arediscussed and the results taken from the applicationsof the best management scenarios are presented as acase study. The best management strategy was observedto be the use of the lagoon as a recreational waterbody. It may be concluded that the WQRRS ecologicalmodel originally developed by the US Corp of Engineerscan be used successfully to make a decision betweenvarious management strategies for maintaining thesustainability of coastal lagoons.
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  • 4
    ISSN: 1573-8590
    Keywords: biological communities ; Aral Sea ; salinisation ; salt lakes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The construction of a dam between the Small and Large Aral Sea in 1993 has had an effect on biological communities. From field and laboratory investigations and analysis of the literature, the structure and function of the main plant and animal communities in the northern (Small) Aral Sea are described and discussed, first, for the period before 1985, and, second, between 1985 and 1994. A prognosis for future changes is provided.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 8 (1999), S. 19-22 
    ISSN: 1573-8590
    Keywords: Lake Urmia ; Iran ; salt lakes ; saline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The major hydrological, morphometric and chemical features of Lake Urmia, a large salt lake in Iran, are briefly reviewed. Some comments are made on bacteriological quality of the lake sediments.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 7 (1998), S. 211-233 
    ISSN: 1573-8590
    Keywords: benthic macroinbertebrates ; Caspian Sea ; salt lakes ; water-level rise ; zoobenthos
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Data on benthic macroinvertebrates of the northern Caspian in 1980–1991 were collected by the Caspian Sea Fishery Research Institute. During the initial period of the water-level rise, the main trends in benthic macroinvertebrates were increases in the biomass of the main groups and decreases in the relative abundance of species of Mediterranean origin. There was no significant alteration in species composition. The increased abundance was due to improved trophic conditions and a decrease in the numbers of benthos-feeding fish. Some decrease in the relative abundance of species of marine origin was related to a decrease in water salinity.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 8 (1999), S. 19-22 
    ISSN: 1573-8590
    Keywords: Lake Urmia ; Iran ; salt lakes ; saline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The major hydrological, morphometric and chemical features of Lake Urmia, a large salt lake in Iran, are briefly reviewed. Some comments are made on bacteriological quality of the lake sediments.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 4 (1995), S. 65-77 
    ISSN: 1573-8590
    Keywords: invertebrates ; salt lakes ; Altiplano ; Bolivia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Based upon a short reconnaissance (March 1991), the chemicalnature and principal invertebrate fauna of seven saline lakes on the Altiplano of southern Bolivia are discussed (Lago de Uru-uru, Pastos Grandes, Lago Ramiditas, Lago Hedionda, Lago Cañapa, Laguna Colorado, pool at L. Colorado). Salinities ranged between 4.4 and 156 g L−1. The fauna was depauperate. Except at the lowest salinities (〈5 gL−1), rotifers were absent. At high salinities (〉≈50 g L−1), onlyArtemia, Boeckella poopoensis, ephydrids and a dolichopodid were present.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 5 (1996), S. 261-274 
    ISSN: 1573-8590
    Keywords: episodic playa lakes ; macroinvertebrates ; Mexico ; salt lakes ; temporary waters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Totolcingo (El Carmen), a large and now episodically filled playa lake in the east-ernmost portion of the Mexican Plateau, filled with water in 1993. Water persisted for just one month (May). Alkaline (pH ≈ 10), saline (K25 up to 30,000μS/cm) waters, dominated by NaHCO3 and Na2CO3, characterized the lake. The fauna was depauperate. The components of the fauna wereEphydra (Hydropyrus)hians Say (ephydrid),Limnodrilus hoffmeisteri Claparède (tubificid), andBerosus sp. (Coleoptera). The species in the lake were widely dispersed and typical inhabitants of saline lakes. Possible reasons for the depauperate fauna include (a) overall physical and chemical conditions, (b) unpredictable hydrology, and (c) the short (one month) inundation period prevented colonization.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    International journal of salt lake research 6 (1997), S. 91-105 
    ISSN: 1573-8590
    Keywords: coastal lagoons ; ecological modelling ; salt lakes ; sustainable management
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The modelling approach for sustainable management is outlined, the results of management scenarios obtained by the modelling studies are discussed and the results taken from the applications of the best management scenarios are presented as a case study. The best management strategy was observed to be the use of the lagoon as a recreational water body. It may be concluded that the WQRRS ecological model originally developed by the US Corp of Engineers can be used successfully to make a decision between various management strategies for maintaining the sustainability of coastal lagoons.
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