The coastal environment is a natural and economic resource of extraordinary value, but it constantly modifying susceptible to climate change, human activities hazards. Remote sensing techniques have proved be excellent for area monitoring, the main issue detect borderline between water bodies (ocean, sea, lake or river) land. This research aims define rapid accurate methodological approach, based on k-means algorithm, classify remotely sensed images in an unsupervised way distinguish body...

Abstract The acquisition of bathymetric data in shallower waters is difficult to attain using traditional survey methods because the areas investigate may not be accessible hydrographic vessels, due risk grounding. For this reason, use satellite detection depth (satellite-derived bathymetry, SDB) constitutes a particularly useful and also economically advantageous alternative. In fact, approach based on analytical modelling light penetration through water column different multispectral bands...

Punta Licosa promontory is located in the northern part of Cilento coast, southern Tyrrhenian basin. This bordered by sea cliffs connected to a wide shore platform sloping slightly towards sea. area has been considered stable at least since Late Pleistocene, as testified series evidence well known literature. The aim this research reconstruct main coastal changes that have occurred middle Holocene means literature data, aerial photo interpretation, satellite images, GPS measurements, direct...

The coastal environment represents a resource from both natural and economic point of view, but it is subject to continuous transformations due climate change, human activities, risks. Remote sensing techniques have enormous potential in monitoring areas. However, one the main tasks accurately identifying boundary between waterbodies such as oceans, seas, lakes or rivers, land surface. aim this research evaluate accuracy coastline extraction using different datasets. images used come UAV-RGB...

Abstract. In recent decades, research has been developed to estimate near-shore bathymetry depth values using satellite imagery. Visible and infrared bands are used derive elevation profile estimates, so obtain bathymetric in rapid way without mobilisation of persons or equipment saving the costs. For consequence, Satellite Derived Bathymetry (SDB) is seen as a valid approach for shallow waters survey: strongly supported by activity scholars researchers, multiple methods available...

Introduced in 1960s to store, analyse, and manipulate data collected for the Canada Land Inventory by mapping information about soils, agriculture, recreation, wildlife, waterfowl, forestry land use, since their origins Geographic Information Systems (GISs) have had a fundamental role study of environment. As computers systems capturing, storing, checking, displaying related positions on Earth's surface, GISs quickly become an effective powerful tool addressing ecological issues, analysing...

Abstract. Different algorithms are available in literature to extract coastline from remotely sensed images and different approaches can be adopted evaluate the result accuracy. In every case, a reference is suitable compare alternative solutions: usually, visual photointerpretation on RGB composition of considered imagery manually vectorization allow an accurate term comparison, but they laborious time consuming. This article aims demonstrate that smart procedure possible using...

The construction of three-dimensional models the seabed starting from sample data requires use interpolators to calculate depth where it has not been measured. accuracy model depends on several factors, e.g., interpolation method, morphology, density and distribution samples. This article aims investigate bathymetric in relation methods number points available. Eight different available ArcGIS software are analyzed this study, including 6 deterministic methods, i.e., Inverse distance...

The eruption of the Hunga Tonga - Ha'apai volcano, which began on January 14,2022, is so far largest twenty-first century. strong explosion it generated was able to change physiognomy island, leaving only two islets. Thanks Sentinel-2 satellite mission, possible acquire images showing island before and after eruption. aim this work detect changes that occurred by comparing acquired different data (before eruption). developed over four basic phases: first concerns application indices...

Abstract. Nautical charts generally report fundamental knowledge for the safety of navigation. This information also includes sea depth data reported as points or contour lines, which can be used to build a 3D model seabed. However, there are different interpolation methods creating digital models, and is no way know in advance them best performing. The aim this work compare spatial applied on dataset concerning seabed Port Naples (Italy) extracted from Electronic Navigational Chart (ENC)...

In recent decades several methods have been developed to extract coastlines from remotely sensed images. fact, this is one of the principal fields remote sensing research that continues receive attention, as testified by thousands scientific articles present in main databases, such SCOPUS, WoS, etc. The issue automatize whole process or at least a great part it, so minimize human error connected photointerpretation and identification training sites support classification objects (basically...

Due to its dynamic nature, coastline requires a continuous monitoring action, especially in presence of natural phenomena such as erosion and sea level rise. Earth observation from space is definitely useful for variations, particularly areas that are difficult access. In addition satellite images, other sources information maps very support studies aimed at reconstructing the dynamics underway starting periods even prior remote sensing space. This article aims define new methodological...

The extraction of the coastline from remotely sensed images is fundamental for many operational fields, e.g., coastal zone management, environmental monitoring and oceanography. Among different approaches available to support process images, methods based on use indices aimed at distinguishing water no-water play a very important role as evidenced by numerous applications described in literature. This article proposes new index highlight difference between two considered classes (water...