Results 91 to 100 of about 1,421,677 (272)

Shorebird responses to fine‐scale water level fluctuations and macrofauna biomass in a newly constructed freshwater wetland

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Restoration of marine and freshwater wetlands for shorebirds is essential for the recovery of their declining populations. An ongoing approach is to restore shorebird habitats by large‐scale engineering, expecting the return of birds once suitable abiotic conditions are (re)established.
Lars Ursem   +3 more
wiley   +1 more source

The united geodetic vertical network of Latvia and Lithuania

open access: yesGeodesy and Cartography, 2012
A unified and continuous national vertical network is the back-bone for geodesy, cartography, civil engineering and global positioning. International institutions are working to reach homogenous and unified vertical datum all around the globe.
Ivars Aleksejenko   +8 more
doaj   +1 more source

Bio‐mediated cementation of supratidal beach sediments associated with groundwater springs

open access: yesSedimentology, EarlyView.
ABSTRACT The formation of beachrock, sensu stricto, via carbonate precipitation in the intertidal zone is widespread throughout the tropics and subtropics. While cementation of supratidal beach sediments has also been noted in several locations, it has received much less attention.
Thomas William Garner   +1 more
wiley   +1 more source

Método de Levantamento Topo-Batimétrico do Perfil do Sistema Praia-Antepraia

open access: yesRevista Brasileira de Geomorfologia, 2004
É apresentada uma metodologia de levantamento topo-batimétrico visando o acoplamento do perfil da praia ao perfil submarino da antepraia, a partir de um mesmo datum vertical de referência em terra, transposto por nivelamento para o ajuste do ecobatimetro,
Dieter Muehe
doaj   +1 more source

Microbial mats and thalassinid shrimp: Spatial and geochemical interactions in a modern intertidal environment

open access: yesSedimentology, EarlyView.
ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris   +9 more
wiley   +1 more source

Intercontinental height datum connection with GOCE and GPS-levelling data

open access: yesJournal of Geodetic Science, 2012
In this study an attempt is made to establish height system datum connections based upon a gravity field and steady-state ocean circulation explorer (GOCE) gravity field model and a set of global positioning system (GPS) and levelling data. The procedure
Gruber T., Gerlach C., Haagmans R.
doaj   +1 more source

Evaluation of grace-based combined geopotential model over the Baltic countries

open access: yesGeodesy and Cartography, 2012
Nowadays, many geodetic and engineering applications require that the two essential components of the vertical positioning – the height and the corresponding reference surface (geoid), are determined precisely.
Artu Ellmann, Harli Jürgenson
doaj   +1 more source

A restriction isomorphism for cycles of relative dimension zero

open access: yes, 2016
We study the restriction map to the closed fiber of a regular projective scheme over an excellent henselian discrete valuation ring, for a cohomological version of the Chow group of relative zero-cycles. Our main result extends the work of Saito--Sato to
Esnault, Hélène   +2 more
core   +1 more source

Formation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling

open access: yesSedimentology, EarlyView.
ABSTRACT Tsunami deposits serve as geological records of past events and are essential for understanding the occurrence and dynamics of tsunamis. However, conventional research has largely focused on sandy and boulder deposits, leaving gravel‐dominated tsunami deposits comparatively underexplored; furthermore, their characteristics and formation ...
Hidetoshi Masuda   +5 more
wiley   +1 more source

WAVE EQUATION DATUMING TO CORRECT TOPOGRAPHY EFFECT ON FOOTHILL SEISMIC DATA

open access: yesEarth Sciences Research Journal, 2005
The current seismic processing applies Static Corrections to overcome the effects associated to rough topography, based in the assumption that velocity in near surface is lower than in the substratum, which force going up rays travel near to vertical ...
Montes Vides Luis Alfredo   +1 more
doaj  

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