scholarly journals Christopher N. K. Mooers (1935–2018)

Eos ◽  
2018 ◽  
Vol 99 ◽  
Author(s):  
George Mellor ◽  
Malcolm Bowman ◽  
Curtis Collins

This passionate physical oceanographer, a leader and catalyst in coastal studies, explored many facets of nearshore circulation and advanced the modeling and forecasting of coastal dynamics.

Author(s):  
Dmitry Kuznetsov ◽  
Dmitry Kuznetsov ◽  
Anatoliy Kamalov ◽  
Anatoliy Kamalov ◽  
Nataliya Belova ◽  
...  

The dynamics of thermoabrasion coasts on loose sediments under permafrost conditions are highly variable due to several factors: length of the dynamic period of the year, mechanic composition of the frozen ground and its ice content, hydrometeorological conditions, and human impact. Multiannual monitoring of the coastal zone was carried out by Lab. Geoecology of the North (Moscow State University) at the 22 km long Kharasavey deposit site, Western Coast of Yamal Peninsula (Kara Sea). The methods include direct measurements and observations (repeated topographic survey of shore transects from 1981 to 2012) along with remote sensing data analysis (images from 1964 to 2011). This allowed producing detailed characteristics of coastal dynamics. At the site, thermoabrasion coasts occupy the most part, and accumulative coasts are present in the north. Data on natural relief forming factors and ground composition are included in the detailed geomorphologic map of the site. Shore retreat rate shows correlation to amounts of wind-wave energy and to specific wind directions. Human impact on the coast includes dredging at the port channel, mining of sand, driving motor vehicles, and deposition of construction debris. Relations between shore retreat rate and aforementioned factors were studied, including dependencies on ice content, and shore segmentation was carried out. This allows for coastal dynamics forecasts in the region.


Author(s):  
Nikolay Lugovoy ◽  
Nikolay Lugovoy ◽  
Askar Ilyasov ◽  
Askar Ilyasov ◽  
Elena Pronina ◽  
...  

The paper describes application of the terrestrial laser scanner for investigation of coastal dynamics of the Svetlogorskaya Bay, Baltic Sea. Methods of investigation and results of surveys repeated over the two consecutive years for quantification of coastal erosion and slope processes within the coastal zone are presented.


2019 ◽  
Vol 21 (2) ◽  
pp. 656-673
Author(s):  
Adely Pereira Silveira ◽  
Fábio Perdigão Vasconcelos ◽  
Vanda Carneiro de Claudino Sales

No presente trabalho voltamos nossa atenção para as dunas móveis que são interfaces litorâneas, áreas continuamente modeladas pelas ações dos ventos e das ondas, importantes reservatórios de sedimentos que atuam na manutenção do fluxo sedimentar da faixa praial. Partindo deste universo, concentramos nossos estudos na Praia de Jericoacoara, município de Jijoca de Jericoacoara-CE, tendo como objetivo analisar a dinâmica morfossedimentar da Duna do Pôr do Sol na Praia de Jericoacoara, a partir da análise temporal de imagens de satélites; realização de perfis de praia,  cálculo do grau de declividade da face de avalanche da duna, da área e do volume sedimentar da duna; e da observação da evolução dos tipos de uso e de ocupação. Os resultados desta pesquisa possibilitaram a elaboração de diagnósticos e prognósticos evolutivos para a área estudada, fornecendo dados e informações que podem vir a subsidiar os gestores públicos na gestão adequada da zona costeira e na compreensão dos riscos ambientais.Palavras-chave: Dinâmica Costeira; Duna; Jericoacoara/CE. ABSTRACTIn the present work we turn our attention to the mobile dunes that are coastal interfaces and represent areas continuously modeled by the action of the winds and the waves, important reservoirs of sediments for  the maintenance of the sedimentary flow of the praial band. Starting from this universe, we concentrated our studies in the Beach of Jericoacoara, municipality of Jijoca of Jericoacoara-CE, aiming to analyze the morphosedimentary dynamics of the Dune of the Sunset on the Beach of Jericoacoara, based on the temporal analysis of satellite images; the realization of beach profiles, the calculation of the degree of slope of the slip face, the area and the sedimentary volume of the dune; and the observation of the evolution of types of use and occupation. The results of this research enabled the elaboration of diagnoses and evolutionary prognoses for the studied area, providing data and information that can subsidize the public managers in the adequate management of the coastal zone and in the understanding of the environmental risks.Keywords: Coastal Dynamics; Dune; Jericoacoara / CE. RESUMENEn el presente trabajo dirigimos nuestra atención a las dunas móviles que son interfaces costeras, áreas continuamente modeladas por las acciones de vientos y olas, importantes depósitos de sedimentos que actúan para mantener el flujo sedimentario de la playa. Desde este universo, enfocamos nuestros estudios en Jericoacoara Beach, Jijoca de Jericoacoara-CE, con el objetivo de analizar la dinámica morfosedimentaria de Sunset Dune en Jericoacoara Beach, a partir del análisis temporal de imágenes de satélite; haciendo perfiles de playa, calculando la pendiente de la cara de avalancha de dunas, el área y el volumen sedimentario de la duna; y observando la evolución de los tipos de uso y ocupación. Los resultados de esta investigación permitieron la elaboración de diagnósticos y pronósticos evolutivos para el área estudiada, proporcionando datos e información que pueden ayudar a los administradores públicos en el manejo adecuado de la zona costera y en la comprensión de los riesgos ambientales.Palabras clave: Dinámica costera; Duna; Jericoacoara / CE.


Author(s):  
Юлия Владимировна Татаркова ◽  
Татьяна Николаевна Петрова ◽  
Олег Валериевич Судаков ◽  
Александр Юрьевич Гончаров ◽  
Ольга Николаевна Крюкова

В настоящей статье представлен обзор основных решений, доступных сегодня для формирования как краткосрочных, так и долгосрочных проекций заболеваемости болезней глаза и его придаточного аппарата в студенческой среде. С другой стороны, существует ряд проблем, связанных с многообразием факторов, влияющих на заболеваемость, статистической необоснованностью и противоречивостью имеющихся результатов анализа данных. Представлены результаты математического моделирования зависимости показателя заболеваемости от наиболее влиятельных факторов образовательной и социальной среды. Перечислены важнейшие направления разработки математических моделей распространения заболеваемости. С помощью разработанного программного комплекса проведена серия вычислительных экспериментов по оценке и прогнозированию заболеваемости обучающихся в вузах разного профиля. Показана эффективность применения методики многовариантного моделирования и прогнозирования, указаны их ограничения и возможности практического применения. По расположению обобщенной области благоприятного прогноза в факторном пространстве можно определить время воздействия неблагоприятных для зрения факторов, которое должно составлять не более 10 ... 11 часов в сутки, количество профилактических мероприятий должно составлять не менее 3 ... 4. При этом риск развития миопии составит не более 0,4, вероятность усталости глаз за компьютером составит не более 0,4, вероятность дискомфорта глаз на занятиях составит не более 0,15. Исходя из характера прогноза, определяется длительность диспансерного наблюдения, а также потребность профилактических мероприятий по устранению или ослаблению действия неблагоприятно влияющих социально-гигиенических и медико-биологических факторов конкретного больного. Использование прогностической матрицы в практическом здравоохранении позволяет существенно улучшить работу по профилактике офтальмологической заболеваемости и является одним из эффективных мероприятий диспансеризации студенческой молодежи, так как дает возможность выделить из числа обучающихся группу с высоким риском неблагоприятного исхода заболевания This article provides an overview of the main solutions available today for the formation of both short-term and long-term projections of the incidence of eye diseases and its adnexa in the student environment. On the other hand, there are a number of problems associated with a variety of factors affecting the incidence, statistical unreasonability and inconsistency of the available data analysis results. The results of mathematical modeling of the dependence of the incidence rate on the most influential factors of the educational and social environment are presented. The most important areas of developing mathematical models for the spread of morbidity are listed. With the help of the developed software package, a series of computational experiments was carried out to assess and predict the incidence of students in universities of various profiles. The effectiveness of the application of multivariate modeling and forecasting methods is shown, their limitations and practical application possibilities are indicated. By the location of the generalized region of favorable prognosis in the factor space, it is possible to determine the exposure time of factors unfavorable for vision, which should be no more than 10 ... 11 hours a day, the number of preventive measures should be at least 3 ... 4. At the same time, the risk of development myopia will be no more than 0.4, the probability of eye fatigue at the computer will be no more than 0.4, the likelihood of eye discomfort in the classroom will be no more than 0.15. Based on the nature of the forecast, the duration of the follow-up observation is determined, as well as the need for preventive measures to eliminate or weaken the action of adverse social, hygienic and biomedical factors of a particular patient. The use of the prognostic matrix in practical health care can significantly improve the work on the prevention of ophthalmic morbidity and is one of the effective medical examinations for students, since it makes it possible to distinguish among the students a group with a high risk of an unfavorable outcome of the disease


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