Results 91 to 100 of about 158,678 (171)

Polystichum minutissimum sp nov (sect. Haplopolystichum, Dryopteridaceae): The smallest Polystichum found in a karst cave in China

open access: yes, 2009
Polystichum minutissimum (sect. Haplopolystichum, Dryopteridaceae) from a karst cave in southern Guizhou, China, is described as new. Polystichum minutissimum is the smallest species in the genus.
He, H   +2 more
core   +1 more source

Numerical simulation of critical flow velocity in the covered karst soil cave formation

open access: yesShuiwen dizhi gongcheng dizhi
The covered karst collapse has the characteristics of concealment, suddenness, uncertainty, and mechanism complexity, which leads to its prevention and treatment more difficult. In the process of covered karst collapse, soil caves formed in the overlying
Xiaoxi CHEN, He HUANG, Yan ZHU, Bin ZENG
doaj   +1 more source

Hypogene Cave Morphologies 2014 : selected papers and abstracts of the symposium held February 2 through 7, 2014, San Salvador Island, Bahamas

open access: yes, 2014
The main thematic activities of the conference are to examine and discuss the unique cave morphologies and speleogens associated with hypogene caves, from the scale of 100 km+ cave maps down to centimeter size wall rock shapes and forms.
Hypogene Cave Morphologies (Conference) (2014 : San Salvador Island, Bahamas)
core   +1 more source

Effects of Karst Cave on the Stability of Diaphragm Walls During Ultra-Deep Excavation

open access: yesAdvances in Civil Engineering
Ultra-deep excavations in karst areas pose a substantial risk due to the presence of unknown karst caves. However, the literatures on deep excavations in karst regions remain limited and lack comprehensive discussion.
Jiaer Mai   +6 more
doaj   +1 more source

Full Proceedings

open access: yes, 2013
National Cave And Karst Research Institute SYMPOSIUM 3 National Cave And Karst Management Symposium PROCEEDINGS OF THE TWENTIETH CONFERENCE NCKMS: A CHANGING CLIMATE November 4 through 8, 2013 Carlsbad, New Mexico EDITORS: Lewis Land New Mexico Bureau of
National Cave and Karst Research Institute
core  

Cave and Karst Management Plan Environmental Assessment

open access: yes, 2006
Carlsbad Caverns National Park proposes to update the park Cave and Karst Management Plan that guides activities that may have an effect on cave resources. Cave resources include not only the cave walls, floors, ceilings and speleothems, but any cultural
National Park Service
core  

Influence of Rock Surface Morphology on Runoff and Sediment in Karst Slope of Southwest China

open access: yesShuitu baochi yanjiu, 2023
[Objective] The aim of the study is to explore the influence of exposed rock surface morphology on the runoff and sediment yield of karst slope, and then to enhance the understanding of rainfall erosion pattern on karst slopes. [Methods] The artificially
AO Liman   +5 more
doaj  

Cave morphology and moonmilk deposits of Ryongmun Cavern, Democratic People’s Republic of Korea: A Study for the Conservation of Natural Heritage

open access: yesActa Carsologica
The Ryongmun Cavern, registered on the World Heritage Tentative List, is the largest and most beautiful karst cave on the Korean peninsula. The characteristics of the cave morphology and moonmilk deposits in the Ryongmun Cavern were studied.
Won–Sok Jon   +2 more
doaj   +1 more source

Main karst and caves of Switzerland

open access: yesBoletín Geológico y Minero, 2016
This paper presents an overview of the main karst areas and cave systems in Switzerland. The first part encloses descriptions of the main geological units that hold karst and caves in the country and summarizes a brief history of research and protection of the cave environments. The second part presents three regions enclosing large cave systems.
openaire   +1 more source

The aquatic diversity of ostracoda, phytoplankton and zooplankton from freshwater cave habitats in Turkey

open access: yes, 2014
During this study, a total of 13 ostracod, 2 zooplankton and 43 phytoplankton taxa were recorded from 22 aqueous caves visited between 2010 and 2013 in Turkey. Whereas three ostracods (Candona cf. Candida, Eucypris sp., Potamocvpris sp.) were new records
Külköylüoʇlu, O.   +3 more
core  

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