Pub Date : 2019-06-28DOI: 10.17265/2328-2193/2019.03.001
Jose B. Bravo, J. Blanco, J. Alcalde
A recent earthquake (13 December 2018, Mag. 3.5) has allowed the recording 11 accelerograms from a network microelectromechanical systems (MEMS) low-cost accelerograph Silex. The National Geographic Institute of Spain (IGN) has built this kind of equipment and has installed in the Lorca City. The epicenter of the earthquake is only approximately 6 km from Lorca. This is important because an earthquake hit this city on 11th May, 2011. This earthquake caused nine deaths, more than 400 injured people and a loss estimated about $1 billion. We have also got records from two commercial accelerograhs GeoSig GMSPlus and GeoSig GSR-18 in two different stations in Lorca and we have been able to compare these signals with signals from Silex. We have studied carefully the records from places where peak accelerations are noticeably higher than in other locations. We have seen that the waveforms of these records have different features and we think that the effect sites are very important. Finally we have also compared the peak acceleration with macroseismic intensity obtained from questionnaries. We have checked there is no clear correlation between instrumental acceleration and macroseismic intensity at least for earthquake with small magnitudes.
{"title":"The IGN MEMS Accelerographs Record the First Accelerograms in Different Locations in the Lorca City","authors":"Jose B. Bravo, J. Blanco, J. Alcalde","doi":"10.17265/2328-2193/2019.03.001","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.03.001","url":null,"abstract":"A recent earthquake (13 December 2018, Mag. 3.5) has allowed the recording 11 accelerograms from a network microelectromechanical systems (MEMS) low-cost accelerograph Silex. The National Geographic Institute of Spain (IGN) has built this kind of equipment and has installed in the Lorca City. The epicenter of the earthquake is only approximately 6 km from Lorca. This is important because an earthquake hit this city on 11th May, 2011. This earthquake caused nine deaths, more than 400 injured people and a loss estimated about $1 billion. We have also got records from two commercial accelerograhs GeoSig GMSPlus and GeoSig GSR-18 in two different stations in Lorca and we have been able to compare these signals with signals from Silex. We have studied carefully the records from places where peak accelerations are noticeably higher than in other locations. We have seen that the waveforms of these records have different features and we think that the effect sites are very important. Finally we have also compared the peak acceleration with macroseismic intensity obtained from questionnaries. We have checked there is no clear correlation between instrumental acceleration and macroseismic intensity at least for earthquake with small magnitudes.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49453454","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}
Pub Date : 2019-06-28DOI: 10.17265/2328-2193/2019.03.002
S. Kusumayudha, Delvianus Kaesmetan, H. Purwanto
Landslide is one of the geological disasters that frequently occur on the natural slopes, often threatening community of the adjacent area. Therefore, it is necessary to hold engineering geological research and assessment in disaster-prone regions such as Gebang district of Purworejo Regency, Central Java Province, Indonesia. This research was conducted to determine and analyze the type of mass movements, factor of safety, potential landslide areas, vulnerable zonation, factors influencing the stability of the slope, and to propose the disaster mitigation recommendation. The methods applied in the research are surface geological mapping, physical soil-rock properties testing, engineering geological assessment and analysis, and Regulation of Minister of Public Works of Republic of Indonesia number 22/PRT/M/2007, on Guidelines to Spatial Planning for Landslide Disaster Areas. To create information on the threats of land movements, a map on landslide potential zonation is developed by considering seven important aspects including: slope inclination, soil conditions, slope constituents, rainfall, slope water condition, seismicity, and vegetation or land use. The results show that, the landslide prone zone of the study area can be divided into 2 types, namely type B and type C. Landslide potential zone of type B involves high level of vulnerability and moderate level of vulnerability. Meanwhile, the landslide potential zone of type C consists of high level of vulnerability and low level of vulnerability.
{"title":"Landslide Vulnerable Zones Based on Engineering Geological Assessment, Case Study: Wonotopo Area, Gebang District, Purworejo Regency, Central Java, Indonesia","authors":"S. Kusumayudha, Delvianus Kaesmetan, H. Purwanto","doi":"10.17265/2328-2193/2019.03.002","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.03.002","url":null,"abstract":"Landslide is one of the geological disasters that frequently occur on the natural slopes, often threatening community of the adjacent area. Therefore, it is necessary to hold engineering geological research and assessment in disaster-prone regions such as Gebang district of Purworejo Regency, Central Java Province, Indonesia. This research was conducted to determine and analyze the type of mass movements, factor of safety, potential landslide areas, vulnerable zonation, factors influencing the stability of the slope, and to propose the disaster mitigation recommendation. The methods applied in the research are surface geological mapping, physical soil-rock properties testing, engineering geological assessment and analysis, and Regulation of Minister of Public Works of Republic of Indonesia number 22/PRT/M/2007, on Guidelines to Spatial Planning for Landslide Disaster Areas. To create information on the threats of land movements, a map on landslide potential zonation is developed by considering seven important aspects including: slope inclination, soil conditions, slope constituents, rainfall, slope water condition, seismicity, and vegetation or land use. The results show that, the landslide prone zone of the study area can be divided into 2 types, namely type B and type C. Landslide potential zone of type B involves high level of vulnerability and moderate level of vulnerability. Meanwhile, the landslide potential zone of type C consists of high level of vulnerability and low level of vulnerability.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48338549","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}
Pub Date : 2019-06-28DOI: 10.17265/2328-2193/2019.03.003
Fábio Fernandes da Silva, César S. Godoi Li, Fernanda Simoni Schuch
The current research presents the results of experiment in situ and laboratory research with the goal of determining the friction angle in residual soil using the CPT (cone penetration test). This experimental research was completed in an area of study, composed of slopes and plateaus, located in the southern region of Brazil, in the Santo Amaro da Imperatriz municipality. An SPT (standard penetration test) and CPT in situ test investigation campaign was conducted and collected from deformed and undeformed samples for physical characterization and triaxial tests. The results made it possible to classify the soils analyzed according to the unified methodology proposed by Robertson that, based on studies provide friction angle values along the hole’s depth, and obtained through the CPT. The friction angle values obtained in the CPT indicated a well-defined trend of high values at the surface, which decrease in the middle of the soil mass and increase again near the healthy rock. The friction angles estimated by the CPT were overestimated when compared to laboratory estimations. This occurrence is explained by the fact that the measured resistance of the field tests is embedded in the cementation and suction plots.
{"title":"Classification and Friction Angle from CPT in Gneissic Residual Soil of Brazil","authors":"Fábio Fernandes da Silva, César S. Godoi Li, Fernanda Simoni Schuch","doi":"10.17265/2328-2193/2019.03.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.03.003","url":null,"abstract":"The current research presents the results of experiment in situ and laboratory research with the goal of determining the friction angle in residual soil using the CPT (cone penetration test). This experimental research was completed in an area of study, composed of slopes and plateaus, located in the southern region of Brazil, in the Santo Amaro da Imperatriz municipality. An SPT (standard penetration test) and CPT in situ test investigation campaign was conducted and collected from deformed and undeformed samples for physical characterization and triaxial tests. The results made it possible to classify the soils analyzed according to the unified methodology proposed by Robertson that, based on studies provide friction angle values along the hole’s depth, and obtained through the CPT. The friction angle values obtained in the CPT indicated a well-defined trend of high values at the surface, which decrease in the middle of the soil mass and increase again near the healthy rock. The friction angles estimated by the CPT were overestimated when compared to laboratory estimations. This occurrence is explained by the fact that the measured resistance of the field tests is embedded in the cementation and suction plots.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47331170","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}
Pub Date : 2019-04-28DOI: 10.17265/2328-2193/2019.02.002
SU Dengfeng
Directional expansion of blast-induced crack is always the common purpose for directional controlled blasting. As it has been demonstrated that slot which located at the side of blasthole can function as a guidance for blast energy, let the stress concentration at the direction of water jet slot. Therefore, it is meaningful to investigate the influence factors of directional controlled blasting with water jet assistance. In this paper, the influence on the guiding characteristics of the water jet slot during the propagation of blast-induced crack by the change of length-width of slot was simulated by ANSYS/LS-DYNA. The results indicate that if the distance from blasthole exceeds the limit, the influence on the guiding characteristics by the change length-width of the slot will get smaller and smaller, and when the width of water jet slot remains the same, the stress shows a monotonic increasing trend with the increase of the length of water jet slot, and the stress reaches its maximum value when the length-width of water jet slot is 0.075m×0.0070m. Moreover, based on stress wave theory and rock fracture theory, the influential mechanism for both the law of transmission of stress wave and of crack propagation by natural fracture and water jet slot were analyzed. The criteria for blast-induced crack propagation were established.
{"title":"Analysis on the Influence Factors of Directional Controlled Blasting Assisted by Water Jet","authors":"SU Dengfeng","doi":"10.17265/2328-2193/2019.02.002","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.02.002","url":null,"abstract":"Directional expansion of blast-induced crack is always the common purpose for directional controlled blasting. As it has been demonstrated that slot which located at the side of blasthole can function as a guidance for blast energy, let the stress concentration at the direction of water jet slot. Therefore, it is meaningful to investigate the influence factors of directional controlled blasting with water jet assistance. In this paper, the influence on the guiding characteristics of the water jet slot during the propagation of blast-induced crack by the change of length-width of slot was simulated by ANSYS/LS-DYNA. The results indicate that if the distance from blasthole exceeds the limit, the influence on the guiding characteristics by the change length-width of the slot will get smaller and smaller, and when the width of water jet slot remains the same, the stress shows a monotonic increasing trend with the increase of the length of water jet slot, and the stress reaches its maximum value when the length-width of water jet slot is 0.075m×0.0070m. Moreover, based on stress wave theory and rock fracture theory, the influential mechanism for both the law of transmission of stress wave and of crack propagation by natural fracture and water jet slot were analyzed. The criteria for blast-induced crack propagation were established.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43310903","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}
Pub Date : 2019-04-28DOI: 10.17265/2328-2193/2019.02.003
R. Nöller, I. Feldmann, Z. Kasztovszky, Z. Szőkefalvi-Nagy, I. Kovács
The objective of this study is to find out, to what extent the geochemical characteristics of lapis lazuli can be utilized in respect to its provenance. A wide range of variables is taken into consideration depending on the quantity of samples analysed from a specific geological region and the methods applied. In order to provide evidence, a multi-technique analytical approach using µXRF, ESEM, PGAA and PIXE is applied to samples from the most famous deposits of lapis lazuli. Special elements determined as fingerprints are compared in relation to the forming conditions obvious in textural features. The results and statistical output allow a differentiation that enables an optimized local classification of the blue stone. An absolute requirement for all geo-tracing performed on blue colored cultural objects of unknown provenance is awareness of the limits of analysis. The possible sources of lapis lazuli are tested by analysing the blue pigment used as paint on murals and ink on manuscripts from the Silk Road.
{"title":"Characteristic Features of Lapis Lazuli from Different Provenances, Revised by µXRF, ESEM, PGAA and PIXE","authors":"R. Nöller, I. Feldmann, Z. Kasztovszky, Z. Szőkefalvi-Nagy, I. Kovács","doi":"10.17265/2328-2193/2019.02.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.02.003","url":null,"abstract":"The objective of this study is to find out, to what extent the geochemical characteristics of lapis lazuli can be utilized in respect to its provenance. A wide range of variables is taken into consideration depending on the quantity of samples analysed from a specific geological region and the methods applied. In order to provide evidence, a multi-technique analytical approach using µXRF, ESEM, PGAA and PIXE is applied to samples from the most famous deposits of lapis lazuli. Special elements determined as fingerprints are compared in relation to the forming conditions obvious in textural features. The results and statistical output allow a differentiation that enables an optimized local classification of the blue stone. An absolute requirement for all geo-tracing performed on blue colored cultural objects of unknown provenance is awareness of the limits of analysis. The possible sources of lapis lazuli are tested by analysing the blue pigment used as paint on murals and ink on manuscripts from the Silk Road.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44478433","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}
Pub Date : 2019-04-28DOI: 10.17265/2328-2193/2019.02.001
Imrich Discantiny
This article is focused on technical and economic evaluation of more than 6-years experiences of operating the Waste Heat Recovery technology—the manner and system of flue gas processing generated in the combustion process in heat & power plants, cogeneration units, etc., which burn the gaseous fuel, primarily natural gas, or methane, biogas, geothermal gas, or other gaseous mixtures containing hydrogen. The solution proposes a more effective and non-traditional use of gaseous fuel for heating, the flue gases of which are processed in order to extract additional utilisable heat, with potential elimination of CO2 from them. Deploying of the heating plant in an island regime (OFF-GRID) enables definition of the benefits brought by the 3 years of operational experience and presents visions for the future offering the possibility to utilise the support energy services at the municipal as well as regional level.
{"title":"Technical and Economic Aspects and Experience from 6 Years of Operating the Technology Using the Waste Heat from the Exhaust Gases of Heat Sources and 3 Years of Operating a Heating Plant in an Autonomous, Island Regime","authors":"Imrich Discantiny","doi":"10.17265/2328-2193/2019.02.001","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.02.001","url":null,"abstract":"This article is focused on technical and economic evaluation of more than 6-years experiences of operating the Waste Heat Recovery technology—the manner and system of flue gas processing generated in the combustion process in heat & power plants, cogeneration units, etc., which burn the gaseous fuel, primarily natural gas, or methane, biogas, geothermal gas, or other gaseous mixtures containing hydrogen. The solution proposes a more effective and non-traditional use of gaseous fuel for heating, the flue gases of which are processed in order to extract additional utilisable heat, with potential elimination of CO2 from them. Deploying of the heating plant in an island regime (OFF-GRID) enables definition of the benefits brought by the 3 years of operational experience and presents visions for the future offering the possibility to utilise the support energy services at the municipal as well as regional level.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48641739","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}
Pub Date : 2019-02-28DOI: 10.17265/2328-2193/2019.01.003
Radu-Constantin Cazamir
: The paper deals with the construction works devoted to extending and upgrading the port functions to the highest European Standards. The Port of Giurgiu is located on the left bank of the Danube River, at the 493 km, and also at 65 km south of Bucharest, the Capital of Romania. Giurgiu is one of the Romanian largest Danubian Ports. Advanced computer programs were used in design. An active monitoring system, regarding the pre-existing constructions on the site, directly influenced by the excavations was also used. The adopted solutions for infrastructure were dependent by the monitoring results of construction site. The weak foundation conditions as well as the proximity of some existing buildings arouse unexpected obstacles difficult to overpass. However, by a perfect human cooperation all targets were finally reached. 177, expert member ICOMOS/Iscarsah, research fields: cultural heritage, seismic engineering, coastal and offshore
{"title":"Extension of Giurgiu Port on Lower Danube","authors":"Radu-Constantin Cazamir","doi":"10.17265/2328-2193/2019.01.003","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.01.003","url":null,"abstract":": The paper deals with the construction works devoted to extending and upgrading the port functions to the highest European Standards. The Port of Giurgiu is located on the left bank of the Danube River, at the 493 km, and also at 65 km south of Bucharest, the Capital of Romania. Giurgiu is one of the Romanian largest Danubian Ports. Advanced computer programs were used in design. An active monitoring system, regarding the pre-existing constructions on the site, directly influenced by the excavations was also used. The adopted solutions for infrastructure were dependent by the monitoring results of construction site. The weak foundation conditions as well as the proximity of some existing buildings arouse unexpected obstacles difficult to overpass. However, by a perfect human cooperation all targets were finally reached. 177, expert member ICOMOS/Iscarsah, research fields: cultural heritage, seismic engineering, coastal and offshore","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43319170","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}
Pub Date : 2019-02-28DOI: 10.17265/2328-2193/2019.01.004
Medet Junussov, F. Mádai, F. Kristály
The work concentrates on extraction of precious metals (Au, Ag, Pd, Pt) and As, Sb, Cu, Pb, Zn, and Fe which are bound to sulfide-ore minerals in sedimentary rocks, using a two-step sequential extraction experiment with two chemical reagents (hydrogen peroxide and aqua regia) on three rock specimens from the black shale formation in Bakyrchik gold-sulfide deposit in North-East Kazakhstan. The experiment allows to determine the speciation of hardly accessible precious metals and to identify the most productive ore-forming stage from the three identified ones. Analytical methods are used for determining polysulfide mineral textures (optical microscopy), mineralogical (XRPD) and chemical compositions (XRF), and for measuring extracted metals concentrations (ICP-OES) in experimental procedures. The analytical results show that the first stage is more productive in gold (total extraction 2.8 ppm) than others and the second stage is more productive in Ag (total 1.6 ppm) and Pd (total 0.01 ppm), while the last stage is more productive in Pt (0.019 ppm) in the deposit.
{"title":"A Two-step Sequential Extraction for Analyzing Hardly Accessible Precious Metals in Sulfide Ore-bearing Sedimentary Rocks","authors":"Medet Junussov, F. Mádai, F. Kristály","doi":"10.17265/2328-2193/2019.01.004","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.01.004","url":null,"abstract":"The work concentrates on extraction of precious metals (Au, Ag, Pd, Pt) and As, Sb, Cu, Pb, Zn, and Fe which are bound to sulfide-ore minerals in sedimentary rocks, using a two-step sequential extraction experiment with two chemical reagents (hydrogen peroxide and aqua regia) on three rock specimens from the black shale formation in Bakyrchik gold-sulfide deposit in North-East Kazakhstan. The experiment allows to determine the speciation of hardly accessible precious metals and to identify the most productive ore-forming stage from the three identified ones. Analytical methods are used for determining polysulfide mineral textures (optical microscopy), mineralogical (XRPD) and chemical compositions (XRF), and for measuring extracted metals concentrations (ICP-OES) in experimental procedures. The analytical results show that the first stage is more productive in gold (total extraction 2.8 ppm) than others and the second stage is more productive in Ag (total 1.6 ppm) and Pd (total 0.01 ppm), while the last stage is more productive in Pt (0.019 ppm) in the deposit.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45453096","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}
Pub Date : 2019-02-28DOI: 10.17265/2328-2193/2019.01.002
Ana Victoria Gómez Alejandro, Heliodoro Daniel Cruz Suárez
In this paper, a study by means of linear regression of rainfall in Villahermosa is proposed, within the study area 5 meteorological stations distributed in the city were analyzed because it is one of the most populated areas of the state, once estimated the data, the non-parametric Mann-Kendall test was used to determine increasing or decreasing linear trends in precipitation. To determine the usefulness of statistical inference, the linear correlation coefficient (r) was calculated, which was 0.86 on average. Statistical efficiency (E) was also calculated, which in all the cases analyzed suggests the viability of statistical inference. As a result of this analysis, a complete rainfall database is presented and evaluated for increasing or decreasing trends for the 1980-2010 period.
{"title":"Rainfall Trend Analysis in the City of Villahermosa, Mexico","authors":"Ana Victoria Gómez Alejandro, Heliodoro Daniel Cruz Suárez","doi":"10.17265/2328-2193/2019.01.002","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.01.002","url":null,"abstract":"In this paper, a study by means of linear regression of rainfall in Villahermosa is proposed, within the study area 5 meteorological stations distributed in the city were analyzed because it is one of the most populated areas of the state, once estimated the data, the non-parametric Mann-Kendall test was used to determine increasing or decreasing linear trends in precipitation. To determine the usefulness of statistical inference, the linear correlation coefficient (r) was calculated, which was 0.86 on average. Statistical efficiency (E) was also calculated, which in all the cases analyzed suggests the viability of statistical inference. As a result of this analysis, a complete rainfall database is presented and evaluated for increasing or decreasing trends for the 1980-2010 period.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47229614","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}
Pub Date : 2019-02-28DOI: 10.17265/2328-2193/2019.01.001
Liu Chang
Low-frequency components of seismic data tend to characterize thicker litho-stratigraphic units, while high-frequency components tend to characterize thinner isochronous-stratigraphic units. Thus, frequency dependent interpretation can help to achieve fine sedimentary sequence analysis. However, in current seismic sedimentology method, a certain frequency profile generated by frequency filtering, loses some stratum reflection information, which is out of the limited frequency band. To achieve real frequency dependent stratum reflection profiles with whole stratum information, a time-varying sparse-spiking deconvolution based method is proposed in this paper. A synthetic example and a real delta progradation example show the accuracy and effectiveness of proposed method.
{"title":"Sparse-Spike Deconvolution Promoting Frequency Dependent Seismic Stratigraphic Analysis and an Application","authors":"Liu Chang","doi":"10.17265/2328-2193/2019.01.001","DOIUrl":"https://doi.org/10.17265/2328-2193/2019.01.001","url":null,"abstract":"Low-frequency components of seismic data tend to characterize thicker litho-stratigraphic units, while high-frequency components tend to characterize thinner isochronous-stratigraphic units. Thus, frequency dependent interpretation can help to achieve fine sedimentary sequence analysis. However, in current seismic sedimentology method, a certain frequency profile generated by frequency filtering, loses some stratum reflection information, which is out of the limited frequency band. To achieve real frequency dependent stratum reflection profiles with whole stratum information, a time-varying sparse-spiking deconvolution based method is proposed in this paper. A synthetic example and a real delta progradation example show the accuracy and effectiveness of proposed method.","PeriodicalId":66051,"journal":{"name":"地质资源与工程:英文版","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44457610","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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