Resultado de búsqueda
In geology, ripple marks are sedimentary structures (i.e., bedforms of the lower flow regime) and indicate agitation by water ( current or waves) or directly by wind . Defining ripple cross-laminae and asymmetric ripples.
Las ondulitas, rizaduras o ripple-marks (es muy común el uso del término en inglés) son estructuras sedimentarias que se forman por la acción de una corriente de agua o viento sobre un sustrato de arena suelta. Las de mayor tamaño se denominan dunas, especialmente las de origen eólico.
Photo by vastateparkstaff via wikipedia. Ripples, dunes, antidunes are all bedforms, structures that form in sand when it is moved by water or wind. Bedforms are ubiquitous on our planet. It is very common to see ripples, undulatory structures in sand, under shallow waters close to seashores or along riverbanks.
Ripple mark, one of a series of small marine, lake, or riverine topographic features, consisting of repeating wavelike forms with symmetrical slopes, sharp peaks, and rounded troughs. Ripple marks are formed in sandy bottoms by oscillation waves, in which only the wave form advances rapidly, the
9 de nov. de 2017 · Ripple marks are sedimentary structures and indicate agitation by water (current or waves) or wind. Ripple marks are ridges of sediment that form in response to wind blowing along a layer of sediment. They are form perpendicular to the wind direction and each ridge is roughly equidistant from the ripple mark on either side.
8 de ene. de 2024 · Nature Geoscience - Wind tunnel experiments and numerical modelling reveal the existence of two distinct ripples on Earth: centimetre-scale impact ripples and decimetre-scale hydrodynamic...
11 de oct. de 2019 · There are two types of ripples: asymmetric and symmetric. Asymmetric ripples exposed in the intertidal zone near Lawrencetown (Nova Scotia). They were formed by a current (likely the tide) that was flowing from left to right. Photo credits © Michael C. Rygel/Wikimedia.commons.
