Hydrography and Water Budget of Obhur Creek, Red Sea

Abstract

Obhur cre ek is located on the ea stern side of the Red Sea , 3S km north o f Jeddah. The hydrographic characteristics of the mean water circul ation pattern and the possibilit y of flushing of the cre ek into the Red Sea a re Investigated based on the collected dat a during the year 1990. Th e hydrographic structure showed eviden ce of thr ee water masses at the e ntrance of the creek: a surface water mass characterized by high temperatur e and salinity ; intermediate water mass distinguished by minimum salinity with core at 10-20 m depth a nd a bottom wat er mass that reaches maximum salinity. Thi s structure yields a two-layer flow at the e ntrance; inflow o f low salinity water at both surface and intermediate depths and outflow o f salter water at the bottom. Based on the water budget. the flushing time o f the cree k vari ed betw een one and four day s during the peri od of investigation. The creek waters were found to be near sa turation with d issolved oxygen and almost transparent, reflecting its oligotrophication.

Invertebrate recruitment on artificial substrates in the Red Sea: role of substrate type and orientation

“…This study was conducted in Obhur Creek, central Red Sea, 35 km north of Jeddah, Saudi Arabia (21°42′33.52″N 39°5′45.71″E). Obhur Creek (Figure 1) is about 10 km long with a maximum width of 1.2 km and depth of 35 m and is connected directly to the Red Sea (El–Rayis & Eid, 1997). The creek is a popular place for recreational activities and marinas.…”

Evidences of Rapid Environmental Evolution of Obhur Creek, Eastern Coast of Red Sea: Physical and Chemical Properties

“…Creek have been concerned nutrients (El-Rayis et al, 1982;El-Rayis and Eid 1997;Touliabah et al, 2010;Ba-Akdah et al, 2008;Turki, and Mudarris 2008;Al-Farawati 2010;Gazzaz, 2007). Most of these studies focused mainly on the heavy polluted areas along Jeddah coast like Al-Shabab and Al-Arbaeeen lagoons.…”