نتایج جستجو برای: shoreline changes
تعداد نتایج: 874088 فیلتر نتایج به سال:
Because of the suitability of coastal lands for different groups of activities such as recreational, residential and commercial functions, there is an increasing demand among different stakeholders to benefit from these natural lands. The conflicts between the users, sometimes, lead to exclusiveness and limitation of public access to the shoreline. This article aims to recognize the main agents...
Shorelines are recognized as unique features on Earth. They have valuable properties for a diverse user community. At present, photogrammetry is the most popular technique used to capture a shoreline. With improved resolution and accuracy, commercial highresolution satellite imagery is demonstrating a great potential in the photogrammetry application domain. One example is the utilization of IK...
[1] Large storms make it difficult to extract the long-term trend of erosion or accretion from shoreline position data. Here we make storms part of the shoreline change model by means of a storm function. The data determine storm amplitudes and the rate at which the shoreline recovers from storms. Historical shoreline data are temporally sparse, and inclusion of all storms in one model over-fit...
Oyster reefs provide valuable ecosystem services that contribute to coastal resilience. Unfortunately, many reefs have been degraded or removed completely, and there are increased efforts to restore oysters in many coastal areas. In particular, much attention has recently been given to the restoration of shellfish reefs along eroding shorelines to reduce erosion. Such fringing reef approaches, ...
Shoreline mapping and shoreline change detection are critical for safe navigation, coastal resource management, coastal environmental protection, and sustainable coastal development and planning. This paper reports the results of IKONOS geopositioning accuracy improvement, showing that a 1-2 meter accuracy can be achieved from 1mresolution IKONOS Geo stereo images. The experiment indicated that...
We completed a shoreline survey of Phragmites occurrence and adjacent land use along more than 8,400 km of shoreline in the Maryland and Virginia portions of the Chesapeake Bay and its tidal tributaries. Phragmites occurred along 14.6% of Maryland estuarine shoreline in the mid-to-upper portion of Chesapeake Bay, but along only 2.0% of the surveyed Virginia shoreline in the mid-to-lower portion...
Shoreline change was identified as a vital sign for the Southwest Alaska Monitoring Network because land loss or gain at the marine edge has important ecological and jurisdictional implications to resource managers of coastal National Parks. To evaluate the type of shoreline changes occurring along the 82 km coastline of Lake Clark National Park and Preserve, 7 of 10 cross-shore beach profiles ...
The present paper reports the observations of waves and beach morphology at two sites in Japan. One is the HORS Research Pier and the other is the Niigata coast where multiple shore protection structures have been installed. An X-band nautical radar system was employed for this study. Radar echo images provided instantaneous distributions of wave crests and waterlines along the shore. They were...
A 6 km long stretch of the coast of Calypsostranda between Skilvika and Joseph− bukta, situated on the western side of Recherchefjorden, was investigated. It is made of an accumulative marine terrace at a height of 2–8 m a.s.l. (terrace 1) and width of 40–180 m, divided by a cliffed section in the frontal moraines of Renardbreen. From the character and intensity of changes, the area was divided...
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