Riparian seeps have been recognized for their contributions to stream flow in headwater catchments, but there is limited data on how seeps affect stream water quality. The objective of this study was to examine the effect of seeps on the variability of stream NO3-N concentrations in FD36 and RS, two agricultural catchments in Pennsylvania. Stream samples were collected at 10-m intervals over re...

The active “ cold seep is indisputable evidence to identify the existence of submarine gas hydrate. Due difference in acoustic properties between bubbles and surrounding seawater, measuring scattering intensity a new means detect seep. Cold are main cause scattering, ability closely related frequency incident sound wave, radius bubble, depth bubble. paper introduces ship-borne sonar syst...

The paper introduces the Oil-Slick Hub (OSH), a computational platform to facilitate data visualization of large database petroleum signatures observed on surface ocean with synthetic aperture radar (SAR) measurements. This Internet offers an information search and retrieval system resulting from >20 years scientific projects that interpreted ~15 thousand offshore mineral oil “slicks”: natur...

The magnitude and variability in methane (CH4) emissions from lakes are uncertain due to limitations in methods for quantifying the patchiness of ebullition (bubbling). We present a field method to estimate an important and highly uncertain source: ebullition from northern lakes. We defined four classes of CH4 bubble clusters trapped in lake ice representing distinct types of biogenic ebullitio...

-Renewable energy has become the prime source of clean and pure form of energy. With the prevailing energy crisis non-conventional energy has become the solution to it. Harnessing wind energy by several wind turbines is commonly done using various types of rotors. But nowadays Seep twist adaptive rotor blades are used to increase annual energy capture of baseline turbine by 5%-10% without excee...

• absorb any blood, other bodily or external fluids or other material that may seep into the back of the patient’s throat and enter the oesophagus or lungs during surgery in the mouth (oral surgery) • to seal the area around the tracheal tube during provision of general anaesthesia and the surgical procedure, and thus prevent leakage of gases • stabilise the tracheal tube or a supraglottic airw...

Abstract Methane seeps host rich biotic communities, forming patchy yet highly productive ecosystems across the global ocean. Persistent hydrocarbon emissions fuel chemosynthetic food webs at seeps. were abundant in Western Interior Seaway of North America during Late Cretaceous. This area also experienced intermittent ash falls, which negatively impacted marine fauna. We propose that methane a...

Vestimentiferan tube worms living at deep−sea hydrothermal vents and cold seeps have been considered as a clade with a long and continuing evolutionary history in these ecosystems. Whereas the fossil record appears to support this view, mo− lecular age estimates do not. The two main features that are used to identify vestimentiferan tubes in the fossil record are longitudinal ridges on the tube...

Systematic documentation of pteriomorph bivalves the late Eocene–early Oligocene Keasey Formation in western Oregon follows previous monographic treatments anomalodesmatans and heteroconchs. It includes material from coeval Cascadia Margin strata southwestern Washington context major molluscan faunal turnover during dramatic doubthouse climate transition an ice-free tropical marine environment ...