In the case of Cluj-Napoca Municipality, the analysis of the landslides is a frequently discussed topic due to its complex geology and urban expansion tendency. In this study, we chose the Gruia Neighbourhood in order to map the landslide evolution and land-use/land-cover (LULC) changes which occured between 2003 and 2021. In order to use the post-classification Change Detection method, we applied the supervised classification technique on three satellite imageries (2003, 2009, 2021), which were validated by high Kappa coefficient values, as it follows: 0,892, 0,879 and 0,931. Comparing the three classified imageries, we could conclude that a transition between agricultural land to urban areas is visible, with a total decrease of the agricultural land by 40,69% and a total increase of the urban area by 24,47%. In the evaluation process of the influence of the LULC change on the landslide evolution, we could observe that the increase of the urban areas led to the increase of the surface of the landslides, moreover, the slided territories on urban areas have increased by 200%.
{"title":"The influence of urban expansion on landslide evolution. A case study in Cluj-Napoca Municipality.","authors":"A. Kerekes, S. Poszet","doi":"10.24193/rcj2022_4","DOIUrl":"https://doi.org/10.24193/rcj2022_4","url":null,"abstract":"In the case of Cluj-Napoca Municipality, the analysis of the landslides is a frequently discussed topic due to its complex geology and urban expansion tendency. In this study, we chose the Gruia Neighbourhood in order to map the landslide evolution and land-use/land-cover (LULC) changes which occured between 2003 and 2021. In order to use the post-classification Change Detection method, we applied the supervised classification technique on three satellite imageries (2003, 2009, 2021), which were validated by high Kappa coefficient values, as it follows: 0,892, 0,879 and 0,931. Comparing the three classified imageries, we could conclude that a transition between agricultural land to urban areas is visible, with a total decrease of the agricultural land by 40,69% and a total increase of the urban area by 24,47%. In the evaluation process of the influence of the LULC change on the landslide evolution, we could observe that the increase of the urban areas led to the increase of the surface of the landslides, moreover, the slided territories on urban areas have increased by 200%.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129008350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study was aimed at assessing the indigenous knowledge of rural women in forest resources conservation in Agoi-ekpo and Agoi-ibami in Yakurr Local Government Area of Cross River State, Nigeria. The objective of the study is: To examine the extent to which indigenous knowledge of rural women have influenced forest resources utilization and conservation. The sampling techniques used for the study are purposive and systematic in the selection of settlements. Purposive sampling was adopted because it was the researcher’s deliberate intention to choose the rural communities in Yakurr L.G.A. that have direct interface with the Forest Reserves and are involved in the use and management of forest resources. While the systematic sampling was used to select rural women households at fixed intervals. The research findings revealed that a significant percent (71.2%) of the rural women were involved in the harvesting of forest resources. The study also showed that different quantities of edible leaves, fruits, snails, and medicinal herbs were collected by rural women for varying purposes. It further showed that these forest resources were harvested at varying frequencies and that they generate income to the rural women. The main forest resources conserved as revealed by the study included afang, atama, editan, bush mango, and hot leaf because of the high exploitation. Restrictions on the felling and uprooting of plants as well as ban on exploitation were the two prominent ways of forest resources conservation. Pearson’s correlation result indicated a positive and significant association between indigenous practices of rural women and forest resources utilization and conservation. It also showed that problems encountered in the collection of forest resources did not vary by the ages of rural women. In order to control unwanted exploitation of forest resources as well ensure the availability for the future, local communities should set-up forest guards or vigilante to control the quantity of edible forest resources that will be harvested from the forest.
{"title":"Indigenous Knowledge of Rural Women in Forest Resources Utilization and Conservation in Agoi-Ibami and Agoi-Ekpo, Yakurr Local Government Area, Cross River State, Nigeria.","authors":"Anoyom Robert Egbe, V. Ebu, David Ekpoto","doi":"10.24193/rcj2022_7","DOIUrl":"https://doi.org/10.24193/rcj2022_7","url":null,"abstract":"This study was aimed at assessing the indigenous knowledge of rural women in forest resources conservation in Agoi-ekpo and Agoi-ibami in Yakurr Local Government Area of Cross River State, Nigeria. The objective of the study is: To examine the extent to which indigenous knowledge of rural women have influenced forest resources utilization and conservation. The sampling techniques used for the study are purposive and systematic in the selection of settlements. Purposive sampling was adopted because it was the researcher’s deliberate intention to choose the rural communities in Yakurr L.G.A. that have direct interface with the Forest Reserves and are involved in the use and management of forest resources. While the systematic sampling was used to select rural women households at fixed intervals. The research findings revealed that a significant percent (71.2%) of the rural women were involved in the harvesting of forest resources. The study also showed that different quantities of edible leaves, fruits, snails, and medicinal herbs were collected by rural women for varying purposes. It further showed that these forest resources were harvested at varying frequencies and that they generate income to the rural women. The main forest resources conserved as revealed by the study included afang, atama, editan, bush mango, and hot leaf because of the high exploitation. Restrictions on the felling and uprooting of plants as well as ban on exploitation were the two prominent ways of forest resources conservation. Pearson’s correlation result indicated a positive and significant association between indigenous practices of rural women and forest resources utilization and conservation. It also showed that problems encountered in the collection of forest resources did not vary by the ages of rural women. In order to control unwanted exploitation of forest resources as well ensure the availability for the future, local communities should set-up forest guards or vigilante to control the quantity of edible forest resources that will be harvested from the forest.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132300781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The periods of warming and cooling of the weather on Earth followed one another with great irregularity and caused significant variations in air temperature but allowed the existence of life and especially of the human species. In this paper we have analysed the variation of air temperature in Oltenia in the period 1961-2021. A number of our other works have analysed the variability of the climate in this part of Romania. After the warm period of 1945-1955, a gradual cooling of the weather followed in summers and during the period 1966-1984 (for 20 years). In summers, no thermal maximum of ≥40°C was registered. The period 2000-2021 (22 years) was the warmest of all the meteorological observations in Oltenia and many annual, monthly and daily climate records were surpassed. At the same time, during the analysed interval, the melting rate of the ice in the polar areas intensified a lot and exceptional thermal maxima were registered. The heat waves during the summers were more and more intense, more frequent and longer in duration. The paper is useful to all those interested in climate variability in Oltenia.
{"title":"Variability of air temperature during summer from the period 1961-2021 in the southwest of Romania, in the context of climate change.","authors":"I. Marinică, A. Marinică","doi":"10.24193/rcj2022_3","DOIUrl":"https://doi.org/10.24193/rcj2022_3","url":null,"abstract":"The periods of warming and cooling of the weather on Earth followed one another with great irregularity and caused significant variations in air temperature but allowed the existence of life and especially of the human species. In this paper we have analysed the variation of air temperature in Oltenia in the period 1961-2021. A number of our other works have analysed the variability of the climate in this part of Romania. After the warm period of 1945-1955, a gradual cooling of the weather followed in summers and during the period 1966-1984 (for 20 years). In summers, no thermal maximum of ≥40°C was registered. The period 2000-2021 (22 years) was the warmest of all the meteorological observations in Oltenia and many annual, monthly and daily climate records were surpassed. At the same time, during the analysed interval, the melting rate of the ice in the polar areas intensified a lot and exceptional thermal maxima were registered. The heat waves during the summers were more and more intense, more frequent and longer in duration. The paper is useful to all those interested in climate variability in Oltenia.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130838026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The classification of hazards is a necessity determined by the origin and the multitude of phenomena and processes approached in the study of risks, as well as by their location. The classification of hazards is very difficult due to the complexity of the underlying phenomena and the relationships at the level of geosystems. As a result, the first part of the paper analyses in detail the criteria for classifying hazards (genetic, typological phenomena, spatial, temporal, mode of manifestation, impact, effects produced, etc.), which allow the delimitation of types and subtypes. In the second part of the paper, starting from the mentioned criteria, we proceed to the classification of hazards.
{"title":"Classification of hazards. Point of view","authors":"V. Sorocovschi","doi":"10.24193/rcj2022_1","DOIUrl":"https://doi.org/10.24193/rcj2022_1","url":null,"abstract":"The classification of hazards is a necessity determined by the origin and the multitude of phenomena and processes approached in the study of risks, as well as by their location. The classification of hazards is very difficult due to the complexity of the underlying phenomena and the relationships at the level of geosystems. As a result, the first part of the paper analyses in detail the criteria for classifying hazards (genetic, typological phenomena, spatial, temporal, mode of manifestation, impact, effects produced, etc.), which allow the delimitation of types and subtypes. In the second part of the paper, starting from the mentioned criteria, we proceed to the classification of hazards.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127610015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gheorghe Roșian, C. Horváth, L. Muntean, Rozalia Benedek
The location of the Cuzdrioara Territorial Administrative Unit in the northern part of the Transylvanian Basin, at the meeting position of the Someșan Plateau and the Someșului Mare Corridor, indicates the existence of a fluvial relief. It is characterized by the presence of an alternation of valley passes and interfluvial passes, between which the connection is made through slopes. Their presence, to which are added the particularities of the geological substratum and land use, indicates the existence of some surfaces susceptible to landslides. To identify them, GIS techniques were used, which implied processing the existing information to obtain the map of landslide probability. It will be one of the necessary tools for the management of the hazardous phenomena created by landslides. At the same time, the information obtained can be used by decision-makers in the current and future urban planning actions.
{"title":"The Probability of Landslides in the Territorial Administrative Unit of Cuzdrioara.","authors":"Gheorghe Roșian, C. Horváth, L. Muntean, Rozalia Benedek","doi":"10.24193/rcj2022_6","DOIUrl":"https://doi.org/10.24193/rcj2022_6","url":null,"abstract":"The location of the Cuzdrioara Territorial Administrative Unit in the northern part of the Transylvanian Basin, at the meeting position of the Someșan Plateau and the Someșului Mare Corridor, indicates the existence of a fluvial relief. It is characterized by the presence of an alternation of valley passes and interfluvial passes, between which the connection is made through slopes. Their presence, to which are added the particularities of the geological substratum and land use, indicates the existence of some surfaces susceptible to landslides. To identify them, GIS techniques were used, which implied processing the existing information to obtain the map of landslide probability. It will be one of the necessary tools for the management of the hazardous phenomena created by landslides. At the same time, the information obtained can be used by decision-makers in the current and future urban planning actions.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128788888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Southern Bărăgan Plain is a geographical unit where the rainfall processes have a moderate action, even reduced in some places, taking into account the low rainfall as well as the morphology and morphometers of the relief. These processes have an impact on man and human activities, primarily through the action they have on land on which intensive agriculture is practiced or even on inhabited areas.
{"title":"Characteristics of the degradation of agricultural surfaces in the southern Bărăgan Plain, through rain-erosion processes.","authors":"F. Achim","doi":"10.24193/rcj2021_19","DOIUrl":"https://doi.org/10.24193/rcj2021_19","url":null,"abstract":"The Southern Bărăgan Plain is a geographical unit where the rainfall processes have a moderate action, even reduced in some places, taking into account the low rainfall as well as the morphology and morphometers of the relief. These processes have an impact on man and human activities, primarily through the action they have on land on which intensive agriculture is practiced or even on inhabited areas.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130011071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Multiple hazards to human health and the environment are associated with a lacking waste management. Among them, landfill fires suddenly release large amounts of various chemicals, leading to environmental pollution and to potential impacts upon human health in the affected areas. The low level of separate collection and recycling of municipal waste in Romania leads to the accumulation of biowaste and other combustible waste (paper, plastic and textiles) in landfills, increasing the risk of landfill fires. Inventorying and monitoring the effects of such inadvertent events is a necessary step towards a thorough assessment of the environmental pollution at regional level. By using a waste fires database and reviewing press reports on large landfill fires, we have identified the spatial distribution of landfill fires in Romania, between 2016 and 2020. While the national annual average is rather low (around 35 fires per year), we were able to identify several hotspots of frequent landfill fires. Such sites draw attention to the ineffective municipal waste management in Romania and to the need for a better environmental monitoring in areas affected by landfill fires.
{"title":"Landfill fires in Romania","authors":"M. Dragan, G. Munteanu","doi":"10.24193/rcj2021_17","DOIUrl":"https://doi.org/10.24193/rcj2021_17","url":null,"abstract":"Multiple hazards to human health and the environment are associated with a lacking waste management. Among them, landfill fires suddenly release large amounts of various chemicals, leading to environmental pollution and to potential impacts upon human health in the affected areas. The low level of separate collection and recycling of municipal waste in Romania leads to the accumulation of biowaste and other combustible waste (paper, plastic and textiles) in landfills, increasing the risk of landfill fires. Inventorying and monitoring the effects of such inadvertent events is a necessary step towards a thorough assessment of the environmental pollution at regional level. By using a waste fires database and reviewing press reports on large landfill fires, we have identified the spatial distribution of landfill fires in Romania, between 2016 and 2020. While the national annual average is rather low (around 35 fires per year), we were able to identify several hotspots of frequent landfill fires. Such sites draw attention to the ineffective municipal waste management in Romania and to the need for a better environmental monitoring in areas affected by landfill fires.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121562099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The variation of river water runoff is a normal phenomenon, given the close link between runoff and atmospheric precipitation, both components of the water balance. The variation of the flow over a period of time can be calculated using several simple and complex indicators, among which the most important are the absolute and relative deviation, the standard deviation (deviation) and the coefficient of variation. In the Căliman Mountains, no analysis of the variation of river water flow has been made so far, this work being the first of its kind. Following this work, it was observed that the variation of water flow from these rivers in the period 1950-2010 depended strongly on the variation of climatic elements (precipitation and temperatures), but also on the characteristics of river basins, both annually and seasonally.
{"title":"The variation of the average water flow from the Căliman Mountains.","authors":"Costin Hîrlav","doi":"10.24193/rcj2021_14","DOIUrl":"https://doi.org/10.24193/rcj2021_14","url":null,"abstract":"The variation of river water runoff is a normal phenomenon, given the close link between runoff and atmospheric precipitation, both components of the water balance. The variation of the flow over a period of time can be calculated using several simple and complex indicators, among which the most important are the absolute and relative deviation, the standard deviation (deviation) and the coefficient of variation. In the Căliman Mountains, no analysis of the variation of river water flow has been made so far, this work being the first of its kind. Following this work, it was observed that the variation of water flow from these rivers in the period 1950-2010 depended strongly on the variation of climatic elements (precipitation and temperatures), but also on the characteristics of river basins, both annually and seasonally.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131134212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Danube River and its mouths area and coast line (delta) in documents and maps from the ancient times to the present. The Danube mouth as reported in documents and maps from the Antiquity to date.This mouth of the Danube and its Delta in particular, where a topic interest for many classical scholars (Herodotus, Erathostenes, Polybus, Ptolemey, Strabo etc) and recent scientific researchers who focused their attention on the number of Danube arms and the evolution of the Delta realm from the moment of its formation to the present configuration. The second half of the 19th century witnessed the publication of Sir Ch. Hartley’s map under the aegis of the Danube European Commission. The map was intended to help the selection of and correction works to one the arms in order to facilitate maritime navigation on it. Several other maps were printed in the 20th century by I.Vidraşcu, 1909-1911, the State Water Committee, 1964 and the Institute of Geography, 1983. In addition a series of topographical maps of Romania territory have also been produced. This sector was created as a result of accumulation processes, the north-south coastal marine currents, moving the river alluvia blocked the river mouth forming the Danube Delta and Halmyris lagoon, the whole becoming Razim Sinoie Lake Complex. This marine shore sector, due to the contribution of river alluvia, is characterized generally by the advance in the marine space, but the current conditions (reducing the volume of sediments from the Danube, marine minitransgression and anthropogenic interventions (by the dams raised at the mouth of the Sulina branch and Cape Midia) generate shoreline retreat in some areas. To identify portions of advancement and retreat, and setting the corresponding annual rates, existing topographic map series for a period of over 150 years, hydrographic measurements for 30 years and series of satellite images starting from 1975 were used.
{"title":"The Danube River and its mouths area and coast line (delta) in documents and maps from the ancient times to the present.","authors":"P. Gâștescu","doi":"10.24193/rcj2021_11","DOIUrl":"https://doi.org/10.24193/rcj2021_11","url":null,"abstract":"The Danube River and its mouths area and coast line (delta) in documents and maps from the ancient times to the present. The Danube mouth as reported in documents and maps from the Antiquity to date.This mouth of the Danube and its Delta in particular, where a topic interest for many classical scholars (Herodotus, Erathostenes, Polybus, Ptolemey, Strabo etc) and recent scientific researchers who focused their attention on the number of Danube arms and the evolution of the Delta realm from the moment of its formation to the present configuration. The second half of the 19th century witnessed the publication of Sir Ch. Hartley’s map under the aegis of the Danube European Commission. The map was intended to help the selection of and correction works to one the arms in order to facilitate maritime navigation on it. Several other maps were printed in the 20th century by I.Vidraşcu, 1909-1911, the State Water Committee, 1964 and the Institute of Geography, 1983. In addition a series of topographical maps of Romania territory have also been produced. This sector was created as a result of accumulation processes, the north-south coastal marine currents, moving the river alluvia blocked the river mouth forming the Danube Delta and Halmyris lagoon, the whole becoming Razim Sinoie Lake Complex. This marine shore sector, due to the contribution of river alluvia, is characterized generally by the advance in the marine space, but the current conditions (reducing the volume of sediments from the Danube, marine minitransgression and anthropogenic interventions (by the dams raised at the mouth of the Sulina branch and Cape Midia) generate shoreline retreat in some areas. To identify portions of advancement and retreat, and setting the corresponding annual rates, existing topographic map series for a period of over 150 years, hydrographic measurements for 30 years and series of satellite images starting from 1975 were used.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128865743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
For Europe, the undisputed importance of the Danube can be rendered by some general data: Its hydrographic basin surface exceeds 817000 km2, i.e. about 10% of that of the continent, its length is 2857 km and its mean multiannual discharge is about 6500 m3/s, thus ranking second to Volga river. Romania is the country with the largest surface situated within Danube’s basin (97.4%), representing 29% of Danube’s hydrographic basin. The water resources of the Danube in Bazias section amount to 173 billion m3, 30 billion m3 of which are technically usable resources.Our analysis aimed at determining those complex meteorological situations at the European continent level that triggered exceptional discharges along the Danube river, resulting in severe flooding, causing in turn heavy damages, fatalities, population evacuations and considerable rehabilitation costs. A complex analysis was performed, of statistical-synoptic type and those complex meteorological situations were identified that determined the occurrence of such disasters. Discharges and levels of the Danube were used along the whole measuring period, data from the archive of the National Meteorological Administration, and data, map and image archives from Wetterzentrale (Kartenarchiv, NCEP, NCAR, AVN etc.). The complex meteorological situations at the level of the European continent that triggered exceptional discharges along the Danube correlate with intense cyclonic activity, of both the Icelandic and the Mediterranean cyclones, with the negative phase of the North-Atlantic Oscillation and with decreasing or minimum solar activity (according to data from NOAA's Space Environment Center). The most disastrous floods occurred in the spring of 2006. The paper is important for meteorologists, in their weather forecasting activity, for hydrologists, in their hydrological forecasting and for the institutions involvedin flood management.
{"title":"Meteorological situations that generated exceptional discharges along the Danube River. (Case study- the situation of April 2006).","authors":"Mihai Bocioaca","doi":"10.24193/rcj2021_15","DOIUrl":"https://doi.org/10.24193/rcj2021_15","url":null,"abstract":"For Europe, the undisputed importance of the Danube can be rendered by some general data: Its hydrographic basin surface exceeds 817000 km2, i.e. about 10% of that of the continent, its length is 2857 km and its mean multiannual discharge is about 6500 m3/s, thus ranking second to Volga river. Romania is the country with the largest surface situated within Danube’s basin (97.4%), representing 29% of Danube’s hydrographic basin. The water resources of the Danube in Bazias section amount to 173 billion m3, 30 billion m3 of which are technically usable resources.Our analysis aimed at determining those complex meteorological situations at the European continent level that triggered exceptional discharges along the Danube river, resulting in severe flooding, causing in turn heavy damages, fatalities, population evacuations and considerable rehabilitation costs. A complex analysis was performed, of statistical-synoptic type and those complex meteorological situations were identified that determined the occurrence of such disasters. Discharges and levels of the Danube were used along the whole measuring period, data from the archive of the National Meteorological Administration, and data, map and image archives from Wetterzentrale (Kartenarchiv, NCEP, NCAR, AVN etc.). The complex meteorological situations at the level of the European continent that triggered exceptional discharges along the Danube correlate with intense cyclonic activity, of both the Icelandic and the Mediterranean cyclones, with the negative phase of the North-Atlantic Oscillation and with decreasing or minimum solar activity (according to data from NOAA's Space Environment Center). The most disastrous floods occurred in the spring of 2006. The paper is important for meteorologists, in their weather forecasting activity, for hydrologists, in their hydrological forecasting and for the institutions involvedin flood management.","PeriodicalId":326907,"journal":{"name":"Risks and Catastrophes Journal","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128599045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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