Partitioning around medoids approach application for computation of regional flood and landslide quantiles

Gnanaprakkasam, Shiyamalagowri; Ganapathy, Pattukandan; Заалишвили, В.Б.; Мельков, Д.А.

doi:10.1051/e3sconf/202015702001

Cited by 4 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Упрощенный метод Бишопа обеспечивает значения коэффициента безопасности, аналогичные значениям, полученным с помощью более строгих методов обеспечения устойчивости (таких как методы Спенсера или Моргенштерна-Прайса) как в 2D [Duncan, Wright, 1980], так и 3D [Reid et al, 2015]. Упрощенный метод Бишопа требует итеративного метода решения для вычисления коэффициента безопасности F, и итерационный процесс иногда не может сходиться к решению или сходится к ложному (то есть, неправильному) решению, особенно если пробная поверхность включает очень крутые участки скольжения или подвержена влиянию высокого давления поровой воды, которое пользователем отфильтровывается.…”

Section: Acknowledgement: This Work Was Supported By the Russian Scie...unclassified

Influence of geomorphological conditions of a mountain region on the intensity of hazardous geological processes

Габараев,

Мельков,

Кортиев

et al. 2023

Геология И Геофизика Юга России

View full text Add to dashboard Cite

Геморфология является одним из ключевых факторов развития геологических процессов. В связи со значительной массой смещаемого материала склоновые процессы, обладают огромной разрушительной силой и представляют большую опасность для жилых, транспортных и других объектов экономики. На примере рекреационного комплекса Мамисон исследовано влияние геоморфологических особенностей горного региона на интенсивность проявления опасных геологических процессов. Методы. В работе использован комплексный подход, включающий математические модели, численные эксперименты, регрессионный анализ натурных и численных данных и разработку комплексной методики в ГИС технологиях. На основе данных космического зондирования Земли SRTM была создана цифровая модель рельефа (DEM) и выполнены расчеты устойчивости склонов в статической постановке методом Бишопа и при динамических воздействиях. При этом динамические (сейсмические) колебания моделировались методом конечных элементов. Результаты.Установлена связь интенсивности колебаний поверхности скального массива с коэффициентом, равным произведению угла наклона рельефа на относителную высоту, и получены формулы для пиковых ускорений и приращений интенсивности. На основе полученных данных было выполнено ранжирование территории по комплексному влиянию статических и динамических нагрузок на массив. Hemorphology is one of the key factors in the development of geological processes. Due to the significant mass of displaced material, slope processes have enormous destructive power and pose a great danger to accommodation, transport and other economic facilities. In example of the Mamison recreational complex, the influence of the geomorphological features of the mountain region on the intensity of the manifestation of hazardous heological processes was studied. Methods. The work uses an integrated approach, including mathematical models, numerical experiments, regression analysis of natural and numerical data and the development of an integrated methodology in GIS technologies. Based on SRTM Earth space sensing data, a digital elevation model (DEM) was created and slope stability calculations were performed in a static setting using the Bishop method and under dynamic loadings. In the latter case, seismic vibrations were modeled by the finite element method. Results.A connection has been established between the intensity of vibrations of the surface of a rock massif and a coefficient equal to the product of the angle of inclination of the relief and the relative height, and formulas for peak accelerations and intensity increments have been obtained. Based on the data obtained, the territory was ranked according to the complex influence of static and dynamic loads on the massif.

show abstract

Section: Acknowledgement: This Work Was Supported By the Russian Scie...unclassified

Influence of geomorphological conditions of a mountain region on the intensity of hazardous geological processes

Габараев,

Мельков,

Кортиев

et al. 2023

Геология И Геофизика Юга России

View full text Add to dashboard Cite

show abstract

“…This algorithm is classified as an algorithm with high computational complexity because it always calculates the distance between datasets[8] [9]. The PAM method is also proven to be stronger than the k-means method in clustering because k-means has a weakness in handling noise and outliners [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Division of Study Class Groups Using the Partitioning Around Medoids (PAM) Method

Naibaho

2021

mib

View full text Add to dashboard Cite

Optimization is a step to solve a problem to get more profitable results. Profitable based on the point of view used or the desired needs. The optimization value can be profitable in the maximum position or profitable in the minimum position. A problem can be solved in different ways, to produce the best solution. The best conditions can be viewed from many things, including tolerance, methods, and problems. Many theories have been developed to solve optimization problems. This optimization problem is often discussed because it is very close to human life. In this case, optimization can be interpreted as the process of achieving the most optimal results by adjusting input, selecting equipment, mathematical processes, and testing. Thereby in this paper, the Partitioning Around Medoids (PAM) method has succeeded in optimizing class grouping by calculating the closest distance between the achievement and intelligence of each student.

show abstract

Study of substrata of a slope susceptible to landslide in hilly environment using a geophysical method in the Nilgiris, India

Mathangi,

Zaalishvili,

Ganapathy

2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

Landslides are one of the prevailing threats to life that causes huge loss to the environment. Around 3.7 million km 2 of the area is exposed to landslides globally and 820,000 km 2 is at high risk for landslides in India. The major triggering factors of landslide in India are rainfall and earthquake. The Nilgiris district which is located in the south-western part of India is more prone to rainfall induced landslides. This study intends to calculate the depth of the slip surface on the slope (Lovedale area, The Nilgiris) in the event of a future landslide using Multichannel Analysis of Surface Waves (MASW). During November 2009 rainfall, a shallow landslide occurred at the toe of this particular slope. Hence, there are more probability for re-occurrence of landslide in the event of rainfall. The shear wave velocity (V s ) obtained from MASW was useful in understanding the variation of the sub-strata and predicting the depth of potential failure surface. The elastic moduli of the soil calculated using empirical relations and software, were compared and one reliable method was considered. The MASW results can be further used for analysing the stability of the slope, reactivation of landslides and landslide early warning system.

show abstract

Partitioning around medoids approach application for computation of regional flood and landslide quantiles

Cited by 4 publications

References 30 publications

Influence of geomorphological conditions of a mountain region on the intensity of hazardous geological processes

Influence of geomorphological conditions of a mountain region on the intensity of hazardous geological processes

Optimizing the Division of Study Class Groups Using the Partitioning Around Medoids (PAM) Method

Study of substrata of a slope susceptible to landslide in hilly environment using a geophysical method in the Nilgiris, India

Contact Info

Product

Resources

About