Groundwater residence time in basement aquifers of the Ochi-Narkwa Basin in the Central Region of Ghana

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F17%3A74732" target="_blank" >RIV/60460709:41330/17:74732 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/17:00321333

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jafrearsci.2017.07.028" target="_blank" >http://dx.doi.org/10.1016/j.jafrearsci.2017.07.028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jafrearsci.2017.07.028" target="_blank" >10.1016/j.jafrearsci.2017.07.028</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Groundwater residence time in basement aquifers of the Ochi-Narkwa Basin in the Central Region of Ghana

Popis výsledku v původním jazyce

Groundwaters from basement aquifers in the Ochi - Narkwa basin of the Central Region together with rain and surface waters have been analysed for stable isotopes (delta O - 18, delta H - 2 and delta C - 13) and radioisotopes (H - 3 and C - 14) to determine sources of recharge, groundwater residence time and flow path. The mechanism of recharge to the groundwaters is by direct infiltration of past local rainfall of mean isotopic composition delta O - 18 = - 3,8 parts per thousand V - SMOW and delta H - 2 = -18 parts per thousand V - SMOW. Tritium in the groundwaters ranged from 0,05 +/- 0,07 to 4,75 +/- 0,16 TU. Tritium data revealed that 85% of the groundwater samples were of modern recharge or young waters. The C - 14 content of the groundwaters ranged between 9,50 pMC in borehole CR2 - 50 at Ekumfi Asokwa to 113,56 pMC in borehole CR3 - 26 at Onyaadze. Evaluation of H - 3 and C - 14 data distinguished three groups of water namely (1) waters characterised by high H - 3 and high C - 14 depicting mode

Název v anglickém jazyce

Groundwater residence time in basement aquifers of the Ochi-Narkwa Basin in the Central Region of Ghana

Popis výsledku anglicky

Groundwaters from basement aquifers in the Ochi - Narkwa basin of the Central Region together with rain and surface waters have been analysed for stable isotopes (delta O - 18, delta H - 2 and delta C - 13) and radioisotopes (H - 3 and C - 14) to determine sources of recharge, groundwater residence time and flow path. The mechanism of recharge to the groundwaters is by direct infiltration of past local rainfall of mean isotopic composition delta O - 18 = - 3,8 parts per thousand V - SMOW and delta H - 2 = -18 parts per thousand V - SMOW. Tritium in the groundwaters ranged from 0,05 +/- 0,07 to 4,75 +/- 0,16 TU. Tritium data revealed that 85% of the groundwater samples were of modern recharge or young waters. The C - 14 content of the groundwaters ranged between 9,50 pMC in borehole CR2 - 50 at Ekumfi Asokwa to 113,56 pMC in borehole CR3 - 26 at Onyaadze. Evaluation of H - 3 and C - 14 data distinguished three groups of water namely (1) waters characterised by high H - 3 and high C - 14 depicting mode

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF AFRICAN EARTH SCIENCES

ISSN

1464-343X

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

134

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

590-599

Kód UT WoS článku

000412609000050

EID výsledku v databázi Scopus

2-s2.0-85026725879