Your search found 8 records
1 Shrestha, R. B.; Gopalakrishnan, C. 1991. Water-use efficiency under two irrigation technologies: A quadratic production function analysis. International Journal of Water Resources Development, 7(2):133-137.
(Location: IWMI-HQ Call no: PER Record No: H08976)
2 Pyle, W. L.; Moore, R. C. 1985. Practical drip irrigation for row crops -- The Hawaiian experience. In Drip/trickle irrigation in action: Proceedings of the Third International Drip/Trickle Irrigation Congress, Centre Plaza Holiday Inn, Fresno, California, USA, 18-21 November 1985. Vol. II: St. Joseph, MI, USA: ASAE. pp.531-539.
(Location: IWMI-HQ Call no: 631.7.1 G000 DRI Record No: H09646)
(Location: IWMI-HQ Call no: P 3833 Record No: H016608)
4 El-Swaify, S. A.; Gowland, P.; Arunin, S. S.; Abrol, I. P. 1982. Salinization problems in Asia and the Pacific. Paper presented at the Workshop on Asian Water Resources Management, Environment and Policy Institute, East-West Center, Honolulu, HI, USA, 13-17 September 1982. 15p. + annexes. (Background paper no.6)
(Location: IWMI-HQ Call no: P 4025 Record No: H05092)
5 Malla, P. B.; Gopalakrishnan, C. 1995. Conservation effects of irrigation water supply pricing: A case study from Oahu, Hawaii. International Journal of Water Resources Development, 11(3):233-242.
(Location: IWMI-HQ Call no: PER Record No: H017563)
The conservation effects of irrigation water supply pricing are examined by employing data on irrigation water use from the Honolulu Board of Water Supply (BWS) and the Waimanalo Irrigation System for the period of 1982/83 -1991/92. A water consumption model was used for this purpose. The OLS procedure indicated the existence of AR(1) autocorrelation in residuals. To make allowance for this, the Orcutt-Cochrane procedure was employed to estimate the regression equations. No evidence of water pricing promoting water conservation was found in either case. Rainfall turned out to be the single-most important variable in explaining the changes in agricultural use in the study areas.
(Location: IWMI HQ Call no: 333.91 G000 LAZ Record No: H045748)
(0.71 MB)
7 Wetzelhuetter, C. (Ed.) 2013. Groundwater in the coastal zones of Asia-Pacific. Dordrecht, Netherlands: Springer. 382p. (Coastal Research Library Volume 7)
(Location: IWMI HQ Call no: 551.457 G570 WET Record No: H046324)
(0.31 MB)
(Location: IWMI HQ Call no: 551.457 G570 WET Record No: H046327)
This chapter summarizes fieldwork conducted to derive new estimates of coastal groundwater discharge and associated nutrient loadings at select coastal sites in Hawai’i, USA. Locations for this work were typically identified based on pronounced, recent ecosystem degradation that may at least partially be attributable to sustained coastal groundwater discharge. Our suite of tools used to evaluate groundwater discharge included select U/Th series radionuclides, a broad spectrum of geochemical analytes, multi-channel electrical resistivity, and in situ oceanographic observations. Based on the submarine groundwater discharge tracer 222Rn, coastal groundwater discharge rates ranged from about 22–50 cm per day at Kahekili, a site in the Ka’anapali region north of Lahaina in west Maui, while at Black Point in Maunalua Bay along southern O’ahu, coastal groundwater discharge rates ranged up to 700 cm per day, although the mean discharge rate at this site was 60 cm per day. The water chemistry of the discharging groundwater can be dramatically different than ambient seawater at both coastal sites. For example, at Kahekili the average concentrations of dissolved inorganic nitrogen (DIN), dissolved silicate (DSi) and total dissolved phosphorus (TDP) were roughly 188-, 36-, and 106-times higher in the discharging groundwater relative to ambient seawater, respectively. Such data extend our basic understanding of the physical controls on coastal groundwater discharge and provide an estimate of the magnitude and physical forcings of submarine groundwater discharge and associated trace metal and nutrient loads conveyed by this submarine route.
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