This paper describes the image processing techniques designed to localize tracks of snowcats for the Italian mission in Antarctica within the ENEA R.A.S. (Surface Antarctic Robot) project for the autonomous driving of intelligent snowcats. The final goal is to enable snowcats to automatically follow preceding ones. A camera is used to acquire images of the scene in realtime; the image sequence ...

Storage routing models are becoming more widely accepted for flood hydrograph synthesis. The network models represent a considerable advance in this direction even though these models are based on many assumptions and empirical relationships. Watershed Bounded Network Model (WBNM) is one such model. This model maintains a good relationship between the hydrological and geomorphological propertie...

To test a conceptual model of non-linear response of hydrologic regimes to watershed characteristics, we selected 48 secondand third-order study sites on the North and South Shores of western Lake Superior, MN (USA) using a random-stratified design based on hydrogeomorphic region, fraction mature forest, and fraction watershed storage (lakeCwetland area/watershed area). We calculated several co...

The coastal beach-dune ecosystem in California supports two federally listed threatened or endangered species: California least tern (Sterna antillarum browni) and western snowy plover (Charadrius alexandrinus nivosus). This ecosystem has become highly stressed due to shoreline development, invasion of exotic plants, beach stabilization, and heavy recreational use. Least tern populations have i...

background & aims of the study: in this research, long-term hydrologic impact assessment model is selected for simulation of runoff and nps pollution. the aim of this study is modeling of non-point source pollution by l-thia model in zayandehrood watershed in 2015. materials & methods: in this study, analytical survey and investigation of references in the context of library studies has been us...

INTRODUCTION The genus Brachyspira contains well-known enteric pathogens of veterinary significance, suggested agents of colonic disease in humans, and one potentially zoonotic agent. There are recent studies showing that Brachyspira are more widespread in the wildlife community than previously thought. There are no records of this genus in wildlife from the southern Atlantic region and Antarct...

One challenge of climate change adaptation is to design watershed-based stormwater management plans that meet current total maximum daily load targets and also take into consideration anticipated changes in future precipitation patterns. We present a multi-scale, multiobjective framework for generating a diverse family of stormwater best management practice (BMP) plans for entire watersheds. Ea...

Introduction: According to the flood records in Mazandaran province, this region is regarded as one of flood-prone regions country, and due floods, it has suffered many casualties financial losses. Therefore, study aimed investigate settlements at risk flooding main goals research. Methods: This descriptive-analytical was conducted based on extensive exploratory research approaches. The require...