scholarly journals Seismic hazard assessment of the urban area of Ambato, Ecuador, in deterministic form

2021 ◽  
Vol 48 (2) ◽  
pp. 131-145
Author(s):  
Roberto Aguiar Falconi ◽  
Paola Serrano Moreta
Keyword(s):  
Urban Area ◽  
Strong Motion ◽  
Seismic Hazard Assessment ◽  
Soil Profiles ◽  
Motion Equations ◽  
Horizontal Acceleration ◽  
The City ◽  
Soil Movements ◽  
Geotechnical Studies

Seismic microzonation of the urban area of Ambato, Ecuador, was done in 2018 in a probabilistic and a deterministic manner. This type of calculation is presented in the first part of the article. For this purpose, three geologic  faults and three strong-motion equations were considered. For each geologic fault, recurrence periods are  determined using two methods. It is seen that a magnitude 6.3 earthquake associated with the blind faults  traversing Ambato may occur in 80 to 100 years, and one of magnitude 6.5 in the next 300 years. Geophysical  and geotechnical studies of the urban area of the city of Ambato are presented. These permitted the acquisition of curves with the same period of soil vibration and equal speed of the shear wave in the first 30  m, plus the classification of soils of the city. Later, six models of strong soil movements were considered and  horizontal acceleration spectra of the soil were obtained in a mesh of points separated every 500 m, for each  soil profile. Average spectra were found for soil profiles C, D and E when making comparisons with the  spectra found in the 2018 study. Based on the results of the present study and those from 2018, new spectral  forms are proposed for the urban area of the city of Ambato (called spectral envelopes) and compared to  spectra reported by seismic regulations in force in Ecuador (NEC-15).

Жизненное состояние древесных насаждений в условиях города Актобе (Казахстан)

2017 ◽  
Vol 7 (4) ◽  
pp. 51-55
Author(s):  
S. A. Abiev ◽  
S. A. Aipeisova ◽  
N. A. Utarbaeva
Keyword(s):  
Urban Area ◽  
Woody Plants ◽  
Health State ◽  
Urban Habitats ◽  
Resistant Species ◽  
Vital State ◽  
Ulmus Laevis ◽  
Urban Conditions ◽  
The City ◽  
Trees And Shrubs

<p>The purpose of our work is to assess the health state of woody plants growing in different habitats of the city of Aktobe. We have studied the health state of arboreal and shrubby plants growing in various urban habitats; the survey was conducted during 2016-2017 by route-visual method. We performed the analysis of species diversity, abundance and density in urban area. The assessment of health state of the trees was made according to V.A. Alekseev. From your data and literature review we established that such species as Ulmus pinnato-ramosa, Acer negundo, Populus tremula, Populus nigra, and Syringa vulgaris have strong winter resistnce in the territory of Aktobe; we registered that only their apex buds and emds of the shoots were frozen in severe winters. The medium-resistant speices include Ulmus laevis and Acer platonoides. They are less plastic and suffer from late spring and early autumn frosts. The Amorpha fruticosa, Vitis vinifera, and Parthenocissus guinguefolia could be considered as the non-resistant species, since they usually freeze up to the snow cover line. The analysis of the vital state made it possible to assess the resistance to urban conditions of the majority of trees and shrubs registered in urban habitats of Aktobe. According to the preliminary data, the origin of the plant and its winter resistance are of main importance when introducing new species to urban area.</p>

STUDY OF ORNAMENTS IN HUNTO SULTAN AMAY MOSQUE GORONTALO

ARTic ◽  
2019 ◽  
Vol 4 ◽  
pp. 167-176
Author(s):  
Risti Puspita Sari Hunowu
Keyword(s):  
Qualitative Method ◽  
The Other ◽  
Visual Form ◽  
Research Material ◽  
Other Hand ◽  
The World ◽  
Existing Form ◽  
The City ◽  
Dutch Colonial

This research is aimed at studying the Hunto Sultan Amay Mosque located in Gorontalo City. Hunto Sultan Amay Mosque is the oldest mosque in the city of Gorontalo The Hunto Sultan Amay Mosque was built as proof of Sultan Amay's love for a daughter and is a representation of Islam in Gorontalo. Researchers will investigate the visual form of the Hunto Sultan Amay Mosque which was originally like an ancient mosque in the archipelago. can be seen from the shape of the roof which initially used an overlapping roof and then converted into a dome as well as mosques in the world, we can be sure the Hunto Sultan Amay Mosque uses a dome roof after the arrival of Dutch Colonial. The researcher used a qualitative method by observing the existing form in detail from the building of the mosque with an aesthetic approach, reviewing objects and selecting the selected ornament giving a classification of the shapes, so that the section became a reference for the author as research material. Based on the analysis of this thesis, the form  of the Hunto Sultan Amay mosque as well as the mosques located in the archipelago and the existence of ornaments in the Hunto Sultan Amay Mosque as a decorative structure support the grandeur of a mosque. On the other hand, Hunto Mosque ornaments reveal a teaching. The form of a teaching is manifested in the form of motives and does not depict living beings in a realist or naturalist manner. the decorative forms of the Hunto Sultan Sultan Mosque in general tend to lead to a form of flora, geometric ornaments, and ornament of calligraphy dominated by the distinctive colors of Islam, namely gold, white, red, yellow and green.

scholarly journals Development of the city-scale chemistry transport model CityChem-EPISODE and its application to the city of Hamburg

2018 ◽  
Author(s):  
Matthias Karl
Keyword(s):  
Air Quality ◽  
Urban Area ◽  
Transport Model ◽  
Dispersion Model ◽  
Temporal Correlation ◽  
Urban Atmosphere ◽  
Aerosol Formation ◽  
Urban Background ◽  
New Model ◽  
The City

Abstract. This paper describes the City-scale Chemistry (CityChem) extension of the urban dispersion model EPISODE with the aim to enable chemistry/transport simulations of multiple reactive pollutants on urban scales. The new model is called CityChem-EPISODE. The primary focus is on the simulation of urban ozone concentrations. Ozone is produced in photochemical reaction cycles involving nitrogen oxides (NOx) and volatile organic compounds (VOC) emitted by various anthropogenic activities in the urban area. The performance of the new model was evaluated with a series of synthetic tests and with a first application to the air quality situation in the city of Hamburg, Germany. The model performs fairly well for ozone in terms of temporal correlation and bias at the air quality monitoring stations in Hamburg. In summer afternoons, when photochemical activity is highest, modelled median ozone at an inner-city urban background station was about 30 % lower than the observed median ozone. Inaccuracy of the computed photolysis frequency of nitrogen dioxide (NO2) is the most probable explanation for this. CityChem-EPISODE reproduces the spatial variation of annual mean NO2 concentrations between urban background, traffic and industrial stations. However, the temporal correlation between modelled and observed hourly NO2 concentrations is weak for some of the stations. For daily mean PM10, the performance of CityChem-EPISODE is moderate due to low temporal correlation. The low correlation is linked to uncertainties in the seasonal cycle of the anthropogenic particulate matter (PM) emissions within the urban area. Missing emissions from domestic heating might be an explanation for the too low modelled PM10 in winter months. Four areas of need for improvement have been identified: (1) dry and wet deposition fluxes; (2) treatment of photochemistry in the urban atmosphere; (3) formation of secondary inorganic aerosol (SIA); and (4) formation of biogenic and anthropogenic secondary organic aerosol (SOA). The inclusion of secondary aerosol formation will allow for a better sectorial attribution of observed PM levels. Envisaged applications of the CityChem-EPISODE model are urban air quality studies, environmental impact assessment, sensitivity analysis of sector-specific emission and the assessment of local and regional emission abatement policy options.

Peak horizontal acceleration and velocity from strong-motion records including records from the 1979 imperial valley, California, earthquake

1981 ◽  
Vol 71 (6) ◽  
pp. 2011-2038 ◽  
Author(s):  
William B. Joyner ◽  
David M. Boore
Keyword(s):  
Strong Motion ◽  
Fault Rupture ◽  
Imperial Valley ◽  
Attenuation Relations ◽  
Motion Data ◽  
Horizontal Acceleration ◽  
Anelastic Attenuation ◽  
Distance Dependence ◽  
Peak Horizontal Acceleration

Abstract We have taken advantage of the recent increase in strong-motion data at close distances to derive new attenuation relations for peak horizontal acceleration and velocity. This new analysis uses a magnitude-independent shape, based on geometrical spreading and anelastic attenuation, for the attenuation curve. An innovation in technique is introduced that decouples the determination of the distance dependence of the data from the magnitude dependence. The resulting equations are log A = − 1.02 + 0.249 M − log r − 0.00255 r + 0.26 P r = ( d 2 + 7.3 2 ) 1 / 2 5.0 ≦ M ≦ 7.7 log V = − 0.67 + 0.489 M − log r − 0.00256 r + 0.17 S + 0.22 P r = ( d 2 + 4.0 2 ) 1 / 2 5.3 ≦ M ≦ 7.4 where A is peak horizontal acceleration in g, V is peak horizontal velocity in cm/ sec, M is moment magnitude, d is the closest distance to the surface projection of the fault rupture in km, S takes on the value of zero at rock sites and one at soil sites, and P is zero for 50 percentile values and one for 84 percentile values. We considered a magnitude-dependent shape, but we find no basis for it in the data; we have adopted the magnitude-independent shape because it requires fewer parameters.

scholarly journals Impacts of urbanisation level and distance from potential natural mosquito breeding habitats on the abundance of canine dirofilariosis

2016 ◽  
Vol 64 (3) ◽  
pp. 340-359 ◽  
Author(s):  
Attila Trájer ◽  
Antal Rengei ◽  
Kinga Farkas-Iványi ◽  
Ákos Bede-Fazekas
Keyword(s):  
Medical Problem ◽  
Urban Environments ◽  
Breeding Habitats ◽  
Mosquito Breeding ◽  
Fluvial Habitat ◽  
Occurrence Patterns ◽  
The City ◽  
Knott’S Test ◽  
Natural Water Bodies

Dirofilariosis is an emerging mosquito-borne veterinary and medical problem in the Northern hemisphere. The ecological investigation of 56 canine dirofilariosis cases in new endemic locations was performed in Szeged, Hungary. The aim was to analyse the influence of the spatial patterns of dog abundance and the potential mosquito breeding habitats on the spatial occurrence patterns of dirofilariosis in the city of Szeged. The limnoecological characterisation was based on the fluvial habitat classification of Amoros of natural water bodies; the built environment was evaluated using the UrbanisationScore urbanisation intensity measuring software. Dirofilaria immitis accounted for 51% and D. repens for 34.3% of the dirofilariosis cases, and in 20% of the cases only the Knott’s test was positive. It was concluded that most of the cases were related to locations with a medium to high urbanisation index, although the proximity of mosquito-bearing waters also played an important role in the observed spatial infection patterns. We found that the distance from potential mosquito habitats and the urbanisation intensity determine the abundance of dirofilariosis in urban environments.

scholarly journals La reconstrucción de Teruel: el devenir de una identidad | The reconstruction of Teruel: the evolution of an identity

ZARCH ◽  
2016 ◽  
pp. 94
Author(s):  
Miguel Sancho ◽  
Beatriz Martín
Keyword(s):  
Civil War ◽  
Urban Area ◽  
Spanish Civil War ◽  
Urban Fabric ◽  
The People ◽  
The Future ◽  
Historical Identity ◽  
The City

Como consecuencia de la devastación a la que se verá sometida Teruel durante la guerra civil española gran parte del núcleo urbano se verá afectado. Esta dramática situación planteará la necesidad reconstruir la ciudad pero también la posibilidad de renovar la trama urbana. En el presente artículo se estudiaran las distintas propuestas llevadas a cabo durante este proceso, la tensión entre las ideas reformistas que entenderán la situación como una oportunidad renovadora sin prejuicios e ideas mucho más conservacionistas preocupadas por la identidad histórica de la ciudad, enfrentarán a los distintos agentes involucrados y finalmente dará lugar a la definitiva actuación propuesta. Es imprescindible conocer y reflexionar sobre una sucesión de ideas que plasmadas sobre el papel pueden decidir el futuro de un pueblo, pero también la conservación de su pasado, de su memoria.As a result of the devastation which will come under Teruel during the Spanish civil war much of the urban area will be affected. This dramatic situation arises the need to rebuild the city but also the possibility of renewing the urban fabric. In this article, the various proposals made during this process will be evaluated. The tension between reformist ideas to understand the situation as a renewed and unprejudiced opportunity and much more conservationist ideas concerned with the historical identity of the city will create a confrontation between different involved agents and ultimately lead to the final proposed action. It is essential to know and think of a series of ideas that once reflected on paper can decide the future of the people, but also the preservation of their past, their memory.

scholarly journals Seismic hazard of Northern Eurasia

1999 ◽  
Vol 42 (6) ◽  
Author(s):  
V. I. Ulomov ◽  
. The GSHAP Region Working Group
Keyword(s):  
Seismic Hazard ◽  
Strong Motion ◽  
Seismic Hazard Assessment ◽  
Exceedance Probability ◽  
Hazard Mapping ◽  
Northern Eurasia ◽  
Ground Acceleration ◽  
Border Regions ◽  
Seismic Catalogue ◽  
Close Cooperation

The GSHAP Regional Centre in Moscow, UIPE, has coordinated the seismic hazard mapping for the whole territory of the former U.S.S.R. and border regions. A five-year program was conducted to assemble for the whole area, subdivided in five overlapping blocks, the unified seismic catalogue with uniform magnitude, the strong motion databank and the seismic zones model (lineament-domain-source), which form the basis of a newly developed deterministic-probabilistic computation of seismic hazard assessment. The work was conducted in close cooperation with border regions and GSHAP regional centers. The hazard was originally computed in terms of expected MSK intensity and then transformed into expected peak ground acceleration with 10% exceedance probability in 50 years.

scholarly journals Revitalization Model of Medan City Based Home Shop as an Image-Forming Identity City

2020 ◽  
Vol 4 (2) ◽  
pp. 165-173
Author(s):  
Deni Saadah Purba ◽  
Dwi Lindarto Hadinugroho
Keyword(s):  
Urban Area ◽  
Secondary Data ◽  
Multiple Functions ◽  
Cultural Aspects ◽  
Commercial Area ◽  
The Face ◽  
Qualitative Descriptive ◽  
The City ◽  
Story Building

The Shophouse is a multi-story building that has multiple functions. The 1st floor is used as a commercial area, and the 2nd floor above is used as a residential place. Revitalization is an effort to revive an urban area through improving the quality of the environment, taking into accounts the socio- cultural aspects and characteristics of the region. The facade is the identity of the building itself by retaining elements and elements on the building façade. This research purposes of finding the dominant appearance of the elements of finding in the shophouse façade in the city of Medan, which is useful for the design revitalizing model of the face of the city as the image of the identity city. The method used in this study is qualitative descriptive, with a variable observation phase with the collection of primary and secondary data through direct observation in the field, then analyzed the shop facade elements that have been Grouped and found the most dominant element. The result of the analysis of the dominant facade element found in the shop façade of Medan is China, Malay, and India. The findings of the dominant facade element can be the identity identifier of the region and city of Medan today.

scholarly journals Sustainable Site System

2021 ◽  
Author(s):  
Jorden J. S. Lefler
Keyword(s):  
Urban Area ◽  
Urban Areas ◽  
Architectural Design ◽  
Heat Island ◽  
Rating Systems ◽  
Island Effect ◽  
Key Points ◽  
Site Design ◽  
The Impact ◽  
The City

This thesis discusses a method of analysing the input of interventions in a building's site design, all of which affect the heat island effect, bio-diversity and hydrology of urban areas. Existing standards from Toronto, Vancouver and Berlin have been researched and analysed. This paper presents an evolution of a method called biotope area factor used in Berlin, Germany. A synthesis of the approach of all three systems was considered and distilled into the key points which were then incorporated into the proposed method. In addition to the impact of an individual building, it also includes the impact from the adjacent street area. The final components of this thesis are the application of the method developed to an urban area in the city of Toronto and results showing the impacts on architectural design from site rating systems.

scholarly journals What can we learn from the January 2012 northern Italy earthquakes?

2012 ◽  
Vol 55 (1) ◽  
Author(s):  
Marco Massa ◽  
Gabriele Ameri ◽  
Sara Lovati ◽  
Rodolfo Puglia ◽  
Gianlorenzo Franceschina ◽  
...  
Keyword(s):  
Strong Motion ◽  
Northern Italy ◽  
Hazard Map ◽  
Civil Protection ◽  
Po Plain ◽  
Motion Data ◽  
Horizontal Acceleration ◽  
Magnitude Range ◽  
Seismic Hazard Map ◽  
Maximum Horizontal Acceleration

<p>This note focuses on the ground motion recorded during the recent moderate earthquakes that occurred in the central part of northern Italy (Panel 1), a region that is characterized by low seismicity. For this area, the Italian seismic hazard map [Stucchi et al. 2011] assigns a maximum horizontal acceleration (rock site) of up to 0.2 g (10% probability of being exceeded in 50 yr). In the last 4 yr, this region has been struck by 9 earthquakes in the magnitude range 4 <span>≤</span>M<span>w </span><span>≤</span> 5.0, with the three largest located in the Northern Apennines (the M<span>w </span>4.9 and 5.0 Parma events, in December 2008 and January 2012) and on the Po Plain (the M<span>w </span>4.9 Reggio Emila event, in January 2012). We have analyzed the strong-motion data (distance &lt;300 km) from these events as recorded by stations belonging to the Istituto Nazionale di Geofisica e Vulcanologia (RAIS, http://rais.mi.ingv.it; RSNC, http://iside.rm.ingv.it) and the Department of Civil Protection (RAN, www.protezionecivile.it; http://itaca.mi.ingv.it). […]</p>

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