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"Quantification of Coastal Change and Preliminary Sediment Budget Calcu" by Rafael C. Carvalho and Ruth Reef

A preliminary sediment budget for the sandy shores flanking the entrance to Western Port, a large bay in Australia, was formulated using a comparison between two Digital Surface Models (DSMs) with a 30-year interval and auxiliary shoreline data. The 1977 DSM was generated from ten aerial photographs using Structure-from-Motion (SfM) photogrammetry. Assessment of its accuracy obtained an RMSE of 0.48 m with most of the independent points overpredicting or underpredicting elevations by less than 0.5 m following manual point cloud cleaning. This technique created a 7.5 km2 surface with a Ground Sampling Distance of 34.3 cm between two coastal towns separated by a narrow channel. Comparison of the 1977 DSM to a second, light detection and ranging (LiDAR)-derived DSM from 2007 showed that a volume of ~200,000 m3 of sediment (above Mean Sea Level) was deposited at Newhaven Beach on Phillip Island, while, during the same period, ~40,000 m3 of sediment was lost from the mainland beaches of San ....

San Remo , Western Port , Phillip Island , Digital Surface Models , Ground Sampling Distance , Mean Sea Level , Newhaven Beach , San Remo Beach , Aerial Photogrammetry , Alance Of Sediments , Historical Archive , Orphological Change , Sandy Beaches ,

"Canopy cover mediates the effects of a decadal increase in time since " by Michael J.M. Franklin, Richard E. Major et al.

Wildfires impact animal populations directly, and indirectly through alteration of forest habitats. Recovery of populations and habitat structure occurs over time since fire, but knowledge is lacking about the relative importance of these processes as drivers of the occurrence of birds in fire-prone forests. We aimed to determine the extent to which canopy cover mediates the effects of a decadal increase in time since fire on the richness and occurrence of canopy bird species. We established sites at either short (5 years) or mid-range (16 years) time since fire in montane dry sclerophyll forests of south-eastern Australia. Canopy cover estimates were derived from airborne LiDAR data. Birds were surveyed using acoustic recorders, with the resulting data analyzed using Bayesian mediation models to partition direct (population processes) and indirect (canopy cover) effects of time since fire on canopy birds. The predictive accuracy of models representing partial mediation (direct and ind ....

Bayesian Mediation Analysis , Allocephalon Fimbriatum , Cross Validation , Fire Regime , Habitat Structure ,

Xiaomi and Baidu-backed Hesai to offer smaller and cheaper lidar sensors for smart EVs, as it fights competition at home and eyes growth abroad

Hesai Group, the world’s sixth-largest maker of sensors for smart cars, aims to add cheaper and more innovative products to its line-up to overcome intensifying competition from domestic rivals and to reach bigger volumes in overseas markets. ....

Electric Cars , Elon Musk , Lidar Sensors , Li Auto , Autonomous Driving , Mart Evs , Self Driving Cars ,

Tesla Semi Prototype Spotted With Intriguing Gear Points to FSD Capability

Although the first Semi units have already been delivered to customers, Tesla is still testing prototypes of the Class-8 truck. A recent sighting showed . ....

Elon Musk , Tesla Cybertruck , Tesla Semi , Palo Alto , Tesla Semi ,