FÍSICO-QUÍMICA DE ÁGUAS E GEOQUÍMICA DE SEDIMENTOS EM SUSPENSÃO DE RECURSOS HÍDRICOS SUPERFICIAIS DO MUNICÍPIO DE BELÉM, ESTADO DO PARÁ

2021 ◽  
Vol 8 (2021) (1) ◽  
pp. 1-20
Author(s):  
Vânia VIANA ◽  
◽  
Marcondes COSTA ◽  
Darilena PORFÍRIO ◽  
Glayce VALENTE ◽  
...  
Keyword(s):  
Natural Waters ◽  
River Estuary ◽  
River System ◽  
Strong Relationship ◽  
Point Of View ◽  
Physical Parameters ◽  
Human Occupation ◽  
The North ◽  
Geological Unit ◽  
The City

The municipality of Belém is installed on low ground under a rich and immense system of surface waters that converge for the most part directly into the Pará River system, Marajó Bay, northern fathom of the Amazon River and then the Atlantic Ocean. The Guamá river (estuary) and Guajará bay stand out, bathing its western, north and northeast portions, and numerous tidal channels, as well as several streams converge on the former, as well as several swamps and temporary wetlands. The main urban nucleus, the city of Belém, was installed and continues to do so, along the tidal and igarapé channels, modifying its courses, and polluting them brutally, either by solid waste or by domestic effluents of all kinds without any treatment, in addition to industrial contributions, becoming more serious as the city moves forward in horizontal and vertical buildings. The tides partially assist in this cleaning, by carrying a large part of these pollutants daily to the Guamá River, from this one to the Guajará Bay and then Marajó and Atlantic. Beautiful beaches in the north and northeast of the municipality (Outeiro, Mosqueiro, Farol, Ariramba, Carananduba, Paraíso and Baía do Sol) attract thousands of visitors, which further contribute to general pollution. Although several surveys have already been carried out to assess these impacts and its dilution, it was decided to try a new attack, emphasizing the Tucunduba stream and its drainage in the Guamá river, the Guajará bay on its margin of strong industrial-port impact and then the beaches of the Baía do Sol. Water and solid sediment in suspension (suspended) were collected in three different periods, considering the two tidal cycles, in eight seasons. Measurements of the main physical parameters were made in loco. Next, cations and anions in the waters analyzed, mineralogical identification and chemistry of the suspensates, in addition to micromorphological analyzes were carried out. The results show that the Guamá river and Guajará bay can be still classified as unpolluted natural waters, similar to the white waters of the Amazon region. Tucunduba and the waters of the Baía do Sol, mainly those restricted (swamps and manholes) are strongly altered by human occupation. Cations and anions, as well as microplankton from the suspension sediments, also allow identify the seasonal interference of oceanic interference during the dry season. The suspension materials of these rivers are dominated by quartz, kaolinite, partly muscovite / illite, demonstrating a strong relationship with the sediments of the margins, gullies and flood plains, and also of the Barreiras Formation, Neogene in age, the geological unit that serves as a substrate for the lands of Belém municipality. However, for a more informed assessment, a systematic and much more comprehensive study is recommended from the chemical, biological, mineralogical point of view and still under strong seasonal and tidal cycle controls, preferably for a continuous decade.

scholarly journals DINÂMICA ESPACIAL DE USO E OCUPAÇÃO DO SOLO URBANO NO MUNICÍPIO DE BREU BRANCO-PA

2021 ◽  
Vol 14 (22) ◽  
pp. 101
Author(s):  
Wagner Luiz Gonçalves da SILVA (IFPA) ◽  
Gilberto de Miranda ROCHA (UFPA)
Keyword(s):  
Remote Sensing ◽  
Spatial Dynamics ◽  
Strong Relationship ◽  
Point Of View ◽  
Master Plan ◽  
Northeast Region ◽  
Spatial Growth ◽  
The North ◽  
Environmental Protection Policies ◽  
The City

Breu Branco é um município do estado do Pará, localizado na microrregião do lago de Tucuruí. Ao longo dos anos o município experimentou um crescimento populacional acelerado, consequência da migração de pessoas oriundas de outras regiões em busca de trabalho e moradia próximos às obras de barragem. O crescimento espacial tem forte relação com a Hidroelétrica. Além do fator populacional, outros três fatores foram importantes para o crescimento espacial de Breu Branco: o preço da terra, a topografia da área de expansão e a falta de políticas de proteção ambiental no município. Nesse trabalho utilizamos ferramentas cartográficas e sensoriamento remoto para a construção de mapas em três períodos 1996, 2006 e 2016. Os resultados obtidos mostram novas dinâmicas espaciais, como a duplicação da área urbana, saturação do núcleo projetado da cidade em direção ao norte, conversão de áreas de floresta e preservação (APP) em ocupações, concentração imobiliária e especulação sobre novas áreas, do ponto de vista populacional um aumento de 58% da população em vinte anos.Palavras-chave: Hidroelétrica. Território, Dinâmicas de uso e ocupação do solo. Cartografia. Plano diretor.SPATIAL DYNAMICS OF USE AND OCCUPATION OF URBAN SOIL IN THE MUNICIPALITY OF BREU BRANCO-PAAbstract: Breu Branco is a municipality in the state of Pará, located in the microregion of Lake Tucuruí. Over the years, the municipality experienced an accelerated population growth, a consequence of the migration of people from other municipalities of Pará and the northeast region of Brazil in search of work and housing near the works. The spatial growth has a strong relationship with the implementation phases of the Tucuruí HPP. In addition to the population factor, three other factors were important for the Breu Branco spatial growth: the price of land, the topography of the expansion area and the lack of environmental protection policies the municipality. In this work, we used cartographic tools and remote sensing for the construction of maps in three periods 1996, 2006 and 2016. The results obtained show new spatial dynamics, such as the duplication of the urban area, saturation of the projected nucleus of the city towards the north, conversion of forest and preservation areas (APP) into occupations, real estate concentration and speculation about new areas, from the point of view. population view an increase of 58% of the population in twenty years. Keywords: Hydroelectric.Territory. Dynamics of use and Soil occupation. Cartography. Master Plan. 

Past Verses Present; Metamorphosis in Different Spheres of Guwahati: A Study of Srutimala Duara’s Mindprints of Guwahati

2020 ◽  
Vol 8 (2) ◽  
pp. 13
Author(s):  
Ankita Pandey
Keyword(s):  
Point Of View ◽  
Areca Nut ◽  
Medieval Period ◽  
River Bank ◽  
North East India ◽  
North East ◽  
The North ◽  
Indian State ◽  
The City ◽  
Beautiful City

Guwahati derives its name from the Assamese word “Guwa” means areca nut and “Haat” means market. However, the modern Guwahati had been known as the ancient Pragjyotishpura and was the capital of Assam under the Kamrupa kingdom. A beautiful city Guwahati is situated on the south bank of the river Bramhaputra. Moreover, It is known as the largest city in the Indian state of Assam and also the largest metropolis in North East India. It has also its importance as the gateway to the North- East India. Assamese and English are the spoken languages in Guwahati.  In 1667, the Mogul forces were defeated in the battle by the Ahom forces commanded by Lachut Barphukan. Thus, in a sense Guwahati became the bone of contention among the Ahoms, Kochas and the Moguls during the medieval period.  Guwahati the administrative headquarters of Lower Assam with a viceroy or Barbhukan was made by the Ahom king.  Since 1972 it has been the capital of Assam. The present paper will discuss the changes happened in Guwahati over the period of late 1970s till the present time. It will focus on the behavior of people, transformed temples, Panbazar of the city, river bank of Bramhaputra, old Fancy Bazaar, chaotic ways, festivals and seasons including a fifth man made season etc. It will also deal how over the years a city endowed with nature’s gifts and scenic views, has been changing as “a dirty city”. Furthermore, it will also present the insurgencies that have barged into the city. The occurrence of changes will be discussed through the perspective and point of view of Srutimala Duara as presented in her book Mindprints of Guwahati.

scholarly journals Middle Holocene Climate Oscillations Recorded in the Western Dvina Lakeland

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1611
Author(s):  
Agnieszka Mroczkowska ◽  
Dominik Pawłowski ◽  
Emilie Gauthier ◽  
Andrey Mazurkevich ◽  
Tomi P. Luoto ◽  
...  
Keyword(s):  
River System ◽  
Summer Temperature ◽  
Human Occupation ◽  
Holocene Climate ◽  
Climate History ◽  
Remarkable Feature ◽  
Climate Oscillations ◽  
Climate Fluctuations ◽  
The North ◽  
The North Atlantic Oscillation

Although extensive archeological research works have been conducted in the Serteya region in recent years, the Holocene climate history in the Western Dvina Lakeland in Western Russia is still poorly understood. The Neolithic human occupation of the Serteyka lake–river system responded to climate oscillations, resulting in the development of a pile-dwelling settlement between 5.9 and 4.2 ka cal BP. In this paper, we present the quantitative paleoclimatic reconstructions of the Northgrippian stage (8.2–4.2 ka cal BP) from the Great Serteya Palaeolake Basin. The reconstructions were created based on a multiproxy (Chironomidae, pollen and Cladocera) approach. The mean July air temperature remained at 17–20 °C, which is similar to the present temperature in the Smolensk Upland. The summer temperature revealed only weak oscillations during 5.9 and 4.2 ka cal BP. A more remarkable feature during those events was an increase in continentality, manifested by a lower winter temperature and lower annual precipitation. During the third, intermediate oscillation in 5.0–4.7 ka cal BP, a rise in summer temperature and stronger shifts in continental air masses were recorded. It is still unclear if the above-described climate fluctuations are linked to the North Atlantic Oscillation and can be interpreted as an indication of Bond events because only a few high-resolution paleoclimatic reconstructions from the region have been presented and these reconstructions do not demonstrate explicit oscillations in the period of 5.9 and 4.2 ka cal BP.

scholarly journals Pichação/Graffitti em Santa Maria: Sistemas Classificatórios, Transbordamentos Semânticos e Maneiras de Narrar a Cidade

ILUMINURAS ◽  
2018 ◽  
Vol 19 (47) ◽  
Author(s):  
Rodrigo Nathan Romanus Dantas
Keyword(s):  
Participant Observation ◽  
Point Of View ◽  
Classification Systems ◽  
Street Art ◽  
Ethnographic Research ◽  
The North ◽  
The World ◽  
The City ◽  
Santa Maria ◽  
Preliminary Phase

Este artigo apresenta alguns itinerários de campo da pesquisa etnográfica que desenvolvi no mestrado, na qual busquei a compreensão de como se dá a construção da inteligibilidade dos acontecimentos acerca da pichação/graffiti em Santa Maria. Trato sobre a fase preliminar da observação participante, a partir de uma loja de street art, experiência que sublinha a importância dos laços de reciprocidade e a lógica dos sistemas classificatórios (as maneiras de colocar o mundo em estrutura, de ordenar intelectivamente o caos sensível) na pichação/graffiti. Dessa experiência indoor, desdobram-se outros cenários de interação com pichadores/grafiteiros, pelas ruas, dentre os quais destaco um domingo na zona norte. A partir do trabalho de campo e de uma leitura pós estruturalista do estrtuturalismo, percebe-se as inversões, as recombinações e os transbordamentos semânticos das categorias binárias (legal/ilegal, limpo/sujo, certo/errado, luz/sombra, belo/feio, visível/invisível...) do ato universal de classificar e, sobretudo, diferentes maneiras de construir os sentidos de viver e de narrar a cidade, a partir da pichação/graffiti. Palavras-chave Pichação/graffiti. Sistemas classificatórios. Transbordamentos semânticos. Reciprocidade. Cidade. PICHAÇÃO/GRAFFITI IN SANTA MARIA:CLASSIFYING SYSTEMS, SEMANTICAL OVERFLOWS AND WAYS TO NARRATE THE CITY.   Abstract This article presents some itineraries of the ethnographic research that I developed in the master degree, in which I sought to understand the construction of the intelligibility of the events about the pichação/graffiti in Santa Maria. I write about the preliminary phase of participant observation, starting in a street art shop, an experience that underlines the importance of reciprocal ties and the logic of classificatory systems (the ways of putting the world in structure, of ordering the sensitive chaos intellectively) around the pichação/graffiti. From this indoor experience to other scenarios of interaction with pichadores/graffiti artists, through the streets, among which I highlight a Sunday in the north zone of the city. Since the fieldwork and a post-structuralist point of view about estrtuturalism, we can see inversions, recombinations and semantic overflows of binary categories (legal / illegal, clean / dirty, right / wrong, light / shadow, beautiful / ugly , visible / invisible ...) of the universal act of classifying and, above all, different ways of constructing the senses of living and narrating the city, around the pichação/graffiti. Keywords Pichação/graffiti. Classification systems. Semantic overflows. Reciprocity. City.

scholarly journals Cultural Heritage and Earthquake: The Case Study of “Santa Maria Della Carità” in Ascoli Piceno

2017 ◽  
Vol 11 (1) ◽  
pp. 1079-1105 ◽  
Author(s):  
Francesco Clementi ◽  
Enrico Quagliarini ◽  
Francesco Monni ◽  
Ersilia Giordano ◽  
Stefano Lenci
Keyword(s):  
Cultural Heritage ◽  
Point Of View ◽  
The North ◽  
Marche Region ◽  
Observed Damage ◽  
The City ◽  
Santa Maria ◽  
The Church ◽  
Structural Point

Background:In October 2016, two major earthquakes occurred in Marche region in the Centre of Italy, that resulted in widespread damage. The second one strokes Norcia, Visso, Arquata del Tronto, Accumoli and Amatrice, causing a lot of damages to cultural heritage of the cities of Tolentino, San Severino, Camerino and Ascoli Piceno, where the church ofSanta Maria della Caritàis located.Introduction:The church has high historical, architectural and social value for the city of Ascoli Piceno, because it is the only one that is opened to the devotees all time in the day and night. From the structural point of view, the church has a long and important annex to the north, which was later built with respect to the church, and after the L’Aquila earthquakes (2009) damages, the church was subjected to a retrofit intervention, in order to obtain a better “box-like behavior”.Objective:This paper addresses how the relevant annex influenced the seismic response of this historical complex and how, more generally, this kind of asymmetric mass may affect the behavior of historic churches.Results and Conclusion:The results indicate that the presence of annex plays a significant role in the dynamic response of the church and affects the distribution of damages in the whole building. The results of the seismic simulation agree with the observed damage.

The Justinian system: one of the oldest flood control facilities in the world

2013 ◽  
Vol 13 (3) ◽  
pp. 683-691
Author(s):  
A. Cihat Kürkçüoğlu ◽  
Kasım Yenigün ◽  
Mustafa S. Yazgan
Keyword(s):  
Flood Control ◽  
Point Of View ◽  
Moderate Size ◽  
The North ◽  
The World ◽  
Flood Disasters ◽  
Ancient Times ◽  
Artificial Channel ◽  
The Many ◽  
The City

In ancient times, the city of Urfa suffered serious flood disasters due to the Karakoyun river which surrounded the city on the north and west sides. In order to prevent the recurrence of such disasters, in 525, the Byzantine Emperor Justinian had built a huge wall of stone (Justinian wall) to the northwest of the city that conducted the river to the north and east walls of the city. He also constructed an artificial channel and three bridges which are known as the Justinian system. This system has been used by the many civilizations that have occupied the city, since the 6th century. Each civilization added some new water structures to the system and carried out some renovations to it. The system, being still in use, defended the city against moderate size floods and survived for 1,500 years. In this paper, the Justinian system is evaluated from the hydraulic point of view together with its ongoing functionality. It is interesting that although the cultural structures of the civilizations settled in the city do not have the same characteristics, the water structures have similar features in terms of hydraulic and architectural perspectives.

Inventories of point and diffuse sources and estimated nutrient loads - a comparison for different river basins in Central Europe

1996 ◽  
Vol 33 (4-5) ◽  
pp. 99-107 ◽  
Author(s):  
Horst Behrendt
Keyword(s):  
River System ◽  
Strong Relationship ◽  
River Basins ◽  
Nutrient Load ◽  
Nutrient Loads ◽  
Diffuse Sources ◽  
North East ◽  
The North ◽  
Point And Diffuse Sources ◽  
Diffuse Emissions

A comparison of the estimated emissions (input) with the measured loads at monitoring stations (output) is presented for the large Rivers Rhine, Elbe and its main tributaries and for the River Warnow, a smaller river in the north-east part of Germany. The comparison shows that the discrepancies between the estimated emissions and the measured load is small for the Rhine and its main tributaries, Mosel, Neckar and Main. Large discrepancies were found for the Elbe and its main tributaries. For all investigated river systems a strong relationship exists between the quotient of measured nutrient load versus the estimated sum of point and diffuse emissions of nutrients and the areal specific runoff. A function is derived for the dependency of the sum of retention and/or losses in a river system on the specific runoff and the nutrient concentration in the river. The high accuracy of the estimated retention and/or losses within the different river basins offer the possibility to use these equations for a prediction of the emitted nutrients from measured nutrient load in similar rivers.

scholarly journals Modeling the potential distribution of the invasive golden mussel Limnoperna fortunei in the Upper Paraguay River system using limnological variables

2010 ◽  
Vol 70 (3 suppl) ◽  
pp. 831-840 ◽  
Author(s):  
MD Oliveira ◽  
SK Hamilton ◽  
DF Calheiros ◽  
CM Jacobi ◽  
RO Latini
Keyword(s):  
Ecological Niche Modeling ◽  
Saturation Index ◽  
River Estuary ◽  
River System ◽  
Entropy Method ◽  
Limnoperna Fortunei ◽  
Maxent Model ◽  
The North ◽  
Paraguay River ◽  
Golden Mussel

The invasive golden mussel, Limnoperna fortunei (Dunker, 1857), was introduced into the La Plata River estuary and quickly expanded upstream to the North, into the Paraguay and Paraná rivers. An ecological niche modeling approach, based on limnological variables, was used to predict the expansion of the golden mussel in the Paraguay River and its tributaries. We used three approaches to predict the geographic distribution: 1) the spatial distribution of calcium concentration and the saturation index for calcium carbonate (calcite); 2) the Genetic Algorithm for Rule-Set Production (GARP) model; and the 3) Maximum Entropy Method (Maxent) model. Other limnological variables such as temperature, dissolved oxygen, pH, and Total Suspended Solids (TSS) were used in the latter two cases. Important tributaries of the Paraguay River such as the Cuiabá and Miranda/Aquidauana rivers exhibit high risk of invasion, while lower risk was observed in the chemically dilute waters of the middle basin where shell calcification may be limited by low calcium concentrations and carbonate mineral undersaturation.

A New InscribedKioniskosfrom Thebes

2006 ◽  
Vol 101 ◽  
pp. 369-377 ◽  
Author(s):  
Vassilis L. Aravantinos
Keyword(s):  
Point Of View ◽  
The Other ◽  
City Centre ◽  
North West ◽  
Railway Line ◽  
The North ◽  
The One ◽  
The City ◽  
Roofing System

A fragmentary inscription found at Thebes casts new light on the abortive invasion of Athens in 506 by Kleomenes, the Boiotians, and the Chalkidians. On the one hand, it provides valuable confirmation, soon after the event, of the general drift of Herodotos' account of events; on the other, even in its incomplete state, it adds one important detail lacking in Herodotos. And, of course, it tells the story from the Boiotian point of view.The excavation took place in the winter of the year 2001–2 in the property of Evanghelia Madhis at Thebes following her application for the construction of a new house. The plot is situated in the suburb of Pyri, in the north-west periphery of Thebes, about 800 m from the city centre of Thebes, and just beyond the Athens–Thessaloniki railway line (FIG. 1). In it was unearthed a well-built tomb-like cist, made of three rows of large conglomerate stone blocks in regular masonry; similar blocks form its pavement. No traces of covering stones or other relevant materials have so far been discovered. However, since the contents of the cist—including objects such as the bronze inscribed sheets found at the bottom—were probably thrown there when it was abandoned, it may never have been properly covered: no trace of a superstructure or roofing system is preserved on the upper surface of the walls of the cist.

Ras al Khaimah: further archaeological discoveries

Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi
Keyword(s):  
United Arab Emirates ◽  
The State ◽  
Focused Attention ◽  
North East ◽  
The North ◽  
History Of ◽  
The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

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