dc.contributor.author | Nkamisa, Melezwa | |
dc.contributor.author | Ndhleve, Simbarashe | |
dc.contributor.author | Nakin, Motebang D.V. | |
dc.contributor.author | Mngeni, Asabonga | |
dc.contributor.author | Kabiti, Hlekani M. | |
dc.date.accessioned | 2022-08-04T09:17:44Z | |
dc.date.available | 2022-08-04T09:17:44Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Nkamisa, M., Ndhleve, S., Nakin, M.D.V., Mngeni, A. & Kabiti, H.M. 2022. Analysis of trends, recurrences, severity and frequency of droughts using standardised precipitation index : case of OR Tambo District Municipality, Eastern Cape, South Africa. Jamba: Journal of disaster risk studies. 14(1):1-10. [http://www.jamba.org.za/index.php/jamba] | en_US |
dc.identifier.issn | 1996-1421 | |
dc.identifier.issn | 2072-845X (Online) | |
dc.identifier.uri | http://hdl.handle.net/10394/39730 | |
dc.identifier.uri | https://doi.org/10.4102/jamba.v14i1.1147 | |
dc.description.abstract | South Africa is susceptible to droughts. However, little documentation exists on drought
occurrence in South Africa at national, provincial and municipal administrative boundaries.
This study profiles hydrological drought in OR Tambo District Municipality from 1998 to
2018, computing frequency, severity and intensity in order to show areas of high
vulnerability. Data used were obtained from South African Weather Services. Standardised
precipitation index (SPI) was calculated using the Meteorological Drought Monitor (MDM)
software. Results showed a wide variation in monthly precipitation throughout the year.
Coastal areas receive higher rainfall than inland municipalities. The study revealed that
Nyandeni experienced the highest drought frequency of 62%, Mhlontlo (58%), King Sabatha
Dalindyebo Municipality (57%), Ngquza Hill (55%) and Port St Johns Municipality showing
the least at 52%. Hydrological drought severity frequency and duration varied between
seven days and nine weeks. Drought intensity class exposed the annual average intensity
for the five local municipalities represented as follows: KSDM (–0.71), PSJM (–0.99), Ngquza
Hill (–0.81), Nyandeni (–0.71) and Mhlontlo (–0.62). The longest drought duration across
OR Tambo was experienced in 2014 with durations varying from 3 to 11 weeks across the
municipalities. OR Tambo District Municipality is susceptible to hydrological droughts
and the extent varies across local municipalities. Results could be used for both adaptation
planning and mitigating the impacts of future droughts. In addition, they could assist in
guiding allocation of drought relief resources in ways that prioritise drought prone and
vulnerable municipality. | en_US |
dc.language | English | |
dc.language.iso | en | en_US |
dc.publisher | OASIS | en_US |
dc.subject | Agricultural drought | en_US |
dc.subject | Climate change | en_US |
dc.subject | Hydrological drought | en_US |
dc.subject | Meteorological drought monitor | en_US |
dc.subject | Standardised precipitation index | en_US |
dc.title | Analysis of trends, recurrences, severity and frequency of droughts using standardised precipitation index : case of OR Tambo District Municipality, Eastern Cape, South Africa | en_US |
dc.type | Article | en_US |