Seasonal and spatial dynamics of gas ebullition in a temperate water-storage reservoir

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00483273" target="_blank" >RIV/60077344:_____/17:00483273 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/17:43895684

Result on the web

<a href="http://dx.doi.org/10.1002/2017WR020694" target="_blank" >http://dx.doi.org/10.1002/2017WR020694</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2017WR020694" target="_blank" >10.1002/2017WR020694</a>

Result language

angličtina

Original language name

Seasonal and spatial dynamics of gas ebullition in a temperate water-storage reservoir

Original language description

Gas ebullition of river impoundments plays an increasingly significant role, particularly in transporting methane CH4 from their sediments to the atmosphere, and contributing to the global carbon budget and global warming. Quantifying stochastic and episodic nature of gas ebullition is complicated especially when conventionally conducted by using coverage-limited gas traps. Current knowledge of seasonality in a reservoir's gas ebullition is lacking in the literature. For this reason, advanced acoustic surveying was intensively applied to determine spatiotemporal distributions of gas ebullition in a European water-storage reservoir for two years. Additionally, the sampling was accompanied with gas collecting for analyzing gas composition. The gas released from the reservoir was primarily composed of CH4 (on average 52%, up to 94%). The longitudinal distribution of gas ebullition was mainly determined by a proximity to the river inflow as a source of organic matter. A magnitude of ebullitive fluxes within the reservoir varied up to 1,300 mL m(-2) d(-1) (30 mmol CH4 M-2 d(-1)). The most significant period of ebullition has turned out to be in fall, on average reaching a sevenfold ebullitive flux (70 mL m(-2) d(-1), 1.6 mmol CH4 M-2 d(-1)) higher than in the rest of the season. A substantial contribution to the fall peak was induced by an expansion of gas ebullition into greater depths, covering two thirds of the reservoir in late fall. The study demonstrates that the ebullitive fluxes of the temperate water storage reservoir were correlated to season, depth, and inflow proximity.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water Resources Research

ISSN

0043-1397

e-ISSN

—

Volume of the periodical

53

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

8266-8276

UT code for WoS article

000418736000008

EID of the result in the Scopus database

2-s2.0-85034416131