Studies of Artificial Water Reservoir Triggered Earthquakes at Koyna, India: A Summary

2021 ◽  
Vol 97 (12) ◽  
pp. 1556-1564
Author(s):  
Harsh K. Gupta
Keyword(s):  
Water Reservoir ◽  
Triggered Earthquakes ◽  
Artificial Water

Artificial Water Reservoir Triggered Seismicity (RTS)

2020 ◽  
Author(s):  
Harsh Gupta
Keyword(s):  
Anthropogenic Activities ◽  
Near Field ◽  
Water Reservoir ◽  
Water Reservoirs ◽  
Triggered Earthquakes ◽  
Triggered Seismicity ◽  
Field Investigations ◽  
Shallow Crust ◽  
Earthquake Sequences ◽  
Artificial Water

<p>A variety of anthropogenic activities are now known to have triggered earthquakes. These include mining, filling of artificial water reservoirs, production of petroleum and geothermal energy, high- pressure fluid injections into shallow crust and many more. Among these, artificial water reservoir triggered seismicity (RTS) is most prominent, with the largest triggered earthquake of M 6.3 having occurred at Koyna, India in 1967. Whether, the devastating Mw 7.8 Sichuan, China earthquake of 8 May 2008 that claimed some 80,000 human lives was triggered by filling of the nearby Zipingpu reservoir, continues to be debated.</p><p>There are over 100 sites globally where RTS events of M ≥ 4 have occurred. Here we present an over view of RTS, common characteristics of the RTS earthquake sequences that help to discriminate them from normal earthquake sequences and also help selection of safer sites for locating dams to create artificial water reservoirs.</p><p>Koyna, near the west coast of India continues to be most prominent site where triggered- earthquakes have been occurring since the impoundment of the reservoir in 1962 and have continued till now with 22 M ≥ 5, ~ 200 M ≥ 4 and several thousands smaller earthquakes. It was argued that Koyna is a very suitable site for near field investigations of triggered earthquakes. Discussions were held in dedicated ICDP workshops and finally a go ahead was given. As a precursor to setting up a near field laboratory at ~ 7 km depth, a 3 km deep Pilot Borehole has been completed in June 2017 and investigations are being carried out for necessary input for setting up the deep borehole laboratory. Salient features of this project are also presented.</p>

scholarly journals Substantiation of ways to reclaim the space of the previously mined-out quarries for the recreational purposes

2019 ◽  
Vol 123 ◽  
pp. 01004 ◽  
Author(s):  
Tursyn Kalybekov ◽  
Manarbek Sandibekov ◽  
Kanay Rysbekov ◽  
Yryszhan Zhakypbek
Keyword(s):  
Water Management ◽  
Water Reservoir ◽  
Opencast Mining ◽  
Water Reservoirs ◽  
Mining Operations ◽  
Land Disturbance ◽  
Mining Enterprise ◽  
Methodological Approaches ◽  
Artificial Water ◽  
Artificial Origin

Opencast fields mining leads to land disturbance when conducting mining operations and storing of overburden rocks. The timely reclaiming of the disturbed lands according to the legislation requirements is an immediate duty of the subsoil user. The reclamation of the previously mined-out space of quarries refers to an extremely important tasks of the mining enterprise. The use of water management direction in reclamation assumes the use of previously mined-out space of a quarry to create the water reservoir through various methods of rehabilitation. There are presented various ways of designing the coastal zone of the created artificial water reservoirs in the previously mined-out space of the quarries located worldwide, which are used for the recreational purposes. The various profiles of slopes of artificial water reservoirs in a quarry with more low gradients, suitable for swimming and recreation are shown. Designing of a coastal area on the site of a quarry, intended for water reservoirs, depends on the water level position in the created body of water. The water reservoir, as the lake of artificial origin, created on the former quarry site, is shown. The purpose of the article is to substantiate the methodological approaches and engineering solutions concerning reclamation of the mined-out space after the opencast mining for the recreational purposes.

Modelling spatial and temporal variations in the water quality of an artificial water reservoir in the semiarid Midwest of Argentina

2011 ◽  
Vol 705 (1-2) ◽  
pp. 243-252 ◽  
Author(s):  
Fabricio D. Cid ◽  
Rosa I. Antón ◽  
Rafael Pardo ◽  
Marisol Vega ◽  
Enrique Caviedes-Vidal
Keyword(s):  
Water Quality ◽  
Water Reservoir ◽  
Temporal Variations ◽  
Spatial And Temporal Variations ◽  
Artificial Water

scholarly journals Opening a turtle graveyard: Size distribution of dead individuals of Phrynops geoffroanus (Pleurodira, Chelidae)

Herpetozoa ◽  
2019 ◽  
Vol 32 ◽  
pp. 33-37
Author(s):  
João Fabrício Mota Rodrigues ◽  
Natália Rizzo Friol ◽  
Wagnar C. Silva ◽  
Erica Demondes ◽  
Antonio Millas Pinto ◽  
...  
Keyword(s):  
Size Distribution ◽  
Carapace Length ◽  
Water Reservoir ◽  
Water Bodies ◽  
Freshwater Turtles ◽  
Aquatic Animals ◽  
Artificial Water

Aquatic animals, such as freshwater turtles, are much dependent on the water bodies where they live. Here we describe the size distribution of a population of Phrynopsgeoffroanus complex that died after the total drought of the artificial water reservoir where it lived in Caatinga. Amongst the 438 animals we found dead in the Cedro water reservoir, we measured the maximum carapace length of 72 individuals. The population was mainly composed of adult individuals and dead turtles measured in areas that kept water for longer were larger than animals from areas that dried up early.

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