10.46243/jst.2021.v6.i3.pp37-44 registered
Aquifer Vulnerability Assessment in Ekowe, Bayelsa State, Niger Delta Area, Nigeria using GIS-Based on Drastic Method
Resolves to https://www.jst.org.in/index.php/pub/article/view/881
Held by Longman Publishers (India) · prefix 10.46243 live · DOI address https://doi.org/10.46243/jst.2021.v6.i3.pp37-44
Registered 29 Sep 2026 via crossref · record version 2 · last change 30 Sep 2026, 12:00 AM · record sha256 7ce106561684ce3a…
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What the DOI identifies
JournalArticle — an article in a journal · Digital · Visual · en
Aquifer Vulnerability Assessment in Ekowe, Bayelsa State, Niger Delta Area, Nigeria using GIS-Based on Drastic Method (PrincipalTitle)
Published 2021-05-20
Part of Journal of Science & Technology · ISSN 2456-5660 · volume 06 · issue 03 · pages 37–44
Agents
- Willabo A. Miepamo (author)
- Bisong Andy Etta (author)
- Justin Ikirigo (author)
- Longman Publishers (publisher)
Identifiers DOI 10.46243/jst.2021.v6.i3.pp37-44
Abstract
This study on aquifer vulnerability assessment in Ekowe town of Southern Ijaw Local Government Area of Bayelsa State, Niger Delta Area, Nigeria, adopted the use of DRASTIC method and geographic information system (GIS) model to delineate areas susceptible to contamination depending on the collective nature of the Seven hydro geologic parameters applied for the aquifer vulnerability evaluations which include depth to water table, net recharge, soil media, impact to vadoze zone, aquifer media, topography, and hydraulic conductivity. Data relating to the seven hydro geologic parameters of the model were obtained and transformed systematically by GIS to develop the DRASTIC vulnerability map which shows the three different forms of aquifer vulnerability namely high, moderate, and low zones. High vulnerable Areas is influenced mainly by high net recharge, shallow depth to water table, porosity of the sandstones in the aquifer media and permeability of the surface soil while the low vulnerability zone is domiciled with Straight slope, high depth to water table, presence of clay and silt in the soil and vadoze zone media, and the distinctive characteristics of the high and low vulnerability zones define the moderate vulnerable Areas.
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Each element by the standard's name (Annex B: reference elements, then administrative) and the Handbook's (in grey), read off the record above.
| Element | Value | In the record |
|---|---|---|
| DOI Name DOI name | 10.46243/jst.2021.v6.i3.pp37-44 | doi |
| Referent Type referentType | Creation | referent |
| Referent Sub-Type referentSubType | JournalArticle — an article in a journal | type |
| Referent Name(s) referentName(s) | Aquifer Vulnerability Assessment in Ekowe, Bayelsa State, Niger Delta Area, Nigeria using GIS-Based on Drastic Method (PrincipalTitle, en) | titles |
| Basic Metadata basicMetadata | author: Willabo A. Miepamo author: Bisong Andy Etta author: Justin Ikirigo publisher: Longman Publishers published: 2021-05-20 part of: Journal of Science & Technology · ISSN 2456-5660 · vol. 06 · no. 03 · pp. 37–44 language: en form: Digital · Visual · Language | agents, dates, container, language, structural_type, modes, characters |
| Referent Identifier(s) alternateIdentifier(s) | none besides the DOI | identifiers, relations (IsSameAs) |
| Registration Authority registrationAuthorityCode | Crossref — issued by Crossref (member 25296); held here as a copy | record.source_agency (our code, ra_doi_name, for names issued here once appointed) |
| Created Date issueDate | 2026-09-12 | record.registered (when the DOI name was first registered) |
| relatedIdentifiers | none needed — the descriptive metadata is in this record | container, relations (only where the descriptive metadata lives at another identifier) |
complete Every System Metadata element is here, with the basic metadata a journal article needs.
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History — the ledger
Every change to this DOI, in order, as it was recorded. Entries are only ever added, never changed or removed.
| # | When | What | By | Changes |
|---|---|---|---|---|
| 1 | 29 Sep 2026, 10:00 PM | register registered at Crossref; record read from api.crossref.org | Administrator (admin) | 108 fields set · sha256 6a6029f07dbc… |
| 2 | 30 Sep 2026, 12:00 AM | update record re-read from api.crossref.org | Administrator (admin) | container.titles.0.value: |
Machine-readable: the history as JSON, with the full record after each change.
