Results 111 to 120 of about 1,421,677 (272)
On the geoid and orthometric height vs. quasigeoid and normal height
Journal of Geodetic Science, 2018 The geoid, but not the quasigeoid, is an equipotential surface in the Earth’s gravity field that can serve both as a geodetic datum and a reference surface in geophysics. It is also a natural zero-level surface, as it agrees with the undisturbed mean sea
Sjöberg Lars E.
doaj +1 more source
Ecosphere, Volume 17, Issue 3, March 2026.Abstract The North American beaver (Castor canadensis) is expanding its distribution in the Arctic tundra. Due to the species' capacity to engineer ecosystems, they can transform surface water dynamics and biogeochemistry, permafrost stability, vegetation composition, and impact Indigenous subsistence practices.
Georgia M. Hole +5 more
wiley +1 more source
Rapid ideal habitat selection in a homogeneous environment
Ecosphere, Volume 17, Issue 3, March 2026.Abstract Studies of density‐dependent habitat selection typically assess choices between two or more distinctly different habitat opportunities. Although such studies can clearly document habitat choice, they cannot unambiguously differentiate the effects of density from underlying differences in habitat and their associated cues for choosing some ...
Douglas W. Morris
wiley +1 more source
Revista Brasileira de Cartografia, 2011 Neste trabalho são apresentadas a determinação e análise da diferença de geopotencial do Datum Vertical Brasileiro em relação ao geoide associado ao Earth Gravity Model 2008 (EGM2008).
Vagner Gonçalves Ferreira +2 more
doaj
Geomatics, Natural Hazards & RiskThis study explores the impact of the selected GNSS reference station numbers on determining horizontal and vertical coseismic deformations resulting from the October 23, 2011, Mw 7.1 Van Earthquake in Eastern Anatolia, near Van city center.
Alpay Özdemir, Uğur Doğan
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Tidal Estuary Morphodynamics of the Knik Arm [PDF]
, 2015 Presented to the Faculty of the University of Alaska Anchorage in Partial Fulfillment of the Requirements For the Degree of MASTER OF CIVIL ENGINEERINGA three-dimensional unsteady flow numerical model was developed to study sediment transport due to
Lewis, Steven E.
core
Engineering Reports, Volume 8, Issue 3, March 2026.From the reviews, a new concept of a low‐speed centrifugal pump (LSCP) driven by a vertical ultra‐low‐head hydro turbine (VULHT) was designed and tested on simulation and physical setup. It was performed with a 1.8 m delivery head, concluding as inefficient. For ultra‐low‐head conditions, different than centrifugal action is recommended.
Raj Kumar Chaulagain +4 more
wiley +1 more source
Study on Reference Datum of Global Crustal Vertical Motion
Procedia Environmental Sciences, 2011 AbstractThree methods to establish the vertical datum of the crustal motion are put forward and investigated. The systematic errors are calculated between some vertical velocity fields and the reference datum of vertical motion of the crust, and the reasons for the diversity of systematic errors are analyzed.
Zhu, Xinhui, Sun, Fuping, Wang, Ren
openaire +1 more source
Philodryas trilineata (Argentinean mousehole snake). Diet [PDF]
, 2013 Philodryas trilineata is a large (maximum length = 200 cm) species endemic to the Monte biogeographic region in western Argentina (Giraudo and Scrocchi 2002. Smithson. Herpetol. Inform. Serv. 132: 1-53). The diet of P.
Alvares, Diego Janish +3 more
core
Engineering Reports, Volume 8, Issue 3, March 2026.The Bilaspur region lies in a highly seismic zone, requiring special attention for infrastructure development like tunnel construction. Rock strength in the area is low, posing challenges for stable tunnel design. RMR values range from 21 to 30, categorizing the rock mass as Poor, requiring robust support measures.
Baalamurugan Arumugam +4 more
wiley +1 more source