Publications


2012

Githiri, JG, J. P P, Barongo JO, Karanja PK.  2012.  An investigation of the structure beneath Magadi area in southern Kenya rift using gravimetric data. Journal of Agriculture, Science and Technology. Volume 24(Number 1):142-160.

2011

2010

2006

O, PROFBARONGOJUSTUS.  2006.  Munga, D., Mwangi, S., Ong. Editors, pp. 213-228, published by Taylor & Francis/Balkema, The Netherlands. : Canadian Center of Science and Education Abstract
n/a

2005

O, PROFBARONGOJUSTUS, OPIYO PROFAKECHNOBERT.  2005.  Mulwa, J. K., Gaciri, S. J., Opiyo-Akech, N and Kianji, G. K., 2005. Geological and structural influence on groundwater distribution and flow in Ngong area,. Kenya. African Journal of Science and Technology, vol. 6, No. 1, pp. 105-115. : Canadian Center of Science and Education Abstract
n/a

2004

2003

O, PROFBARONGOJUSTUS.  2003.  Barongo, J. O., 2003. SGL 104 : Geostatistics,. Lecture Notes for 1st Year Bed. (Science) by Distance Learning, 155 pp.. : Canadian Center of Science and Education Abstract
n/a

1999

O, PROFBARONGOJUSTUS.  1999.  Barongo, J.O., 1999. Selection of a appropriate model for the interpretation of time-domain airborne electromagnetic data for geological mapping,. Exploration Geophysics 29, 107-110.. : Canadian Center of Science and Education Abstract
n/a

1998

Barongo, JO.  1998.  Selection of a appropriate model for the interpretation of time-domain airborne electromagnetic data for geological mapping. AbstractWebsite

A detailed analysis of the time-domain INPUT airborne electromagnetic response to a horizontal layer of variable conductivity and thickness reveals that there are combinations of conductivity and thickness of the layer for which the response behaves like that of a thin sheet (thickness << diffusion depth), those for which it behaves like that of a finite layer (thickness between those of thin sheet and half-space) and those for which it behaves like that of a half-space (thickness >> diffusion depth). Plots of thickness versus conductivity at which the response changes from one category of behaviour to another produces three distinct zones we have referred to as 'thin sheet response zone', 'finite layer response zone' and 'half-space response zone', respectively. The boundaries between these three zones move to higher conductances with increasing sample times. A damped least-squares inversion of the synthetic time-domain airborne electromagnetic response involving all the six channels of the INPUT system and based on singular value decomposition produces a distinct 'boundary' separating pairs of layer conductivity and thickness which can be uniquely resolved from those which cannot. The results further show that conductivity and thickness pairs within the thin-sheet response zone, as expected, cannot be uniquely resolved but those within the finite-layer response zone can be resolved. Using carefully interpreted conductivities and thicknesses of the conductive weathered layer from reconnaissance ground resistivity sounding data from an area flown earlier with an INPUT system, I demonstrate how to apply the general 'response diagram' arising from the above results to select between a thin sheet, finite layer and half-space model for the interpretation of time-domain airborne electromagnetic data for geological mapping.

1996

Legge, PL, Barongo JO, Opiyo-Aketch N, Mathu EM, Nyambok IO.  1996.  Development in earth Science Education in East Africa.. Website
O, PROFBARONGOJUSTUS.  1996.  Barongo, J.O., 1996. Studies of Geoelectric Structure Beneath Eburru Geothermal Region, Rift Valley. Kenya, Research Report for National Council of Science and Technology, Project No. NCST/SEC/4400.343, 55p.. : Canadian Center of Science and Education Abstract
n/a

1994

Barongo, JO.  1994.  Euler’s differential equation and the identification of the magnetic point‐pole and point‐dipole sources. AbstractWebsite

The concept of point‐pole and point‐dipole in interpretation of magnetic data is often employed in the analysis of magnetic anomalies (or their derivatives) caused by geologic bodies whose geometric shapes approach those of (1) narrow prisms of infinite depth extent aligned, more or less, in the direction of the inducing earth’s magnetic field, and (2) spheres, respectively. The two geologic bodies are assumed to be magnetically polarized in the direction of the Earth’s total magnetic field vector (Figure 1). One problem that perhaps is not realized when interpretations are carried out on such anomalies, especially in regions of high magnetic latitudes (45–90 degrees), is that of being unable to differentiate an anomaly due to a point‐pole from that due to a point‐dipole source. The two anomalies look more or less alike at those latitudes (Figure 2). Hood (1971) presented a graphical procedure of determining depth to the top/center of the point pole/dipole in which he assumed prior knowledge of the anomaly type. While it is essential and mandatory to make an assumption such as this, it is very important to go a step further and carry out a test on the anomaly to check whether the assumption made is correct. The procedure to do this is the main subject of this note. I start off by first using some method that does not involve Euler’s differential equation to determine depth to the top/center of the suspected causative body. Then I employ the determined depth to identify the causative body from the graphical diagram of Hood (1971, Figure 26)

1993

1991

1990

O, PROFBARONGOJUSTUS.  1990.  Barongo, J.O. and Nyambok, I.O., 1990. Earthquakes and their measurements,. Geophysical 56, 133-138.. : Canadian Center of Science and Education Abstract
Science News 2, 125-132.

1989

O, PROFBARONGOJUSTUS.  1989.  Barongo, J.O., 1989. Application of ground resistivity and airborne electromagnetic methods to geological mapping in tropical terrains,. Ph.D. thesis, McGill University, Montreal, PQ, Canada.. : Canadian Center of Science and Education Abstract
n/a

1987

O, PROFBARONGOJUSTUS.  1987.  Barongo, J.O., 1987 Geophysical detection of mineral conductors in tropical terrains with target conductors partly embedded in the conductive overburden,. Geophysical Prospecting 35, 568-589.. : Canadian Center of Science and Education Abstract
n/a

1985

O, PROFBARONGOJUSTUS.  1985.  Barongo, J.O., 1985. Spectral analysis of the vertical gradient of the total magnetic field anomalies due to two-dimensional dykes,. Kenya Journal of Science and Technology Series A, 6(1), 49-58.. : Canadian Center of Science and Education Abstract
n/a
O, PROFBARONGOJUSTUS.  1985.  Barongo, J.O., Method for depth estimation on aeromagnetic vertical gradient anomalies. Geophysics 50, 963-968.. : Canadian Center of Science and Education Abstract
n/a

1984

O, PROFBARONGOJUSTUS.  1984.  Barongo, J.O., 1984. Euler. Geophysics 49, 1549-1553.. : Canadian Center of Science and Education Abstract
n/a

1983

O, PROFBARONGOJUSTUS.  1983.  Barongo, J.O., 1983. Geophysical investigations for kimberlite pipes in the greenstone belt of western Kenya. Journal of African Earth Sciences 1, 235-253.. : Canadian Center of Science and Education Abstract
n/a

1982

O, PROFBARONGOJUSTUS.  1982.  Geoelectric structure below Eburru geothermal field, Rift Valley, Kenya,. Proceedings of the regional seminar on geothermal energy in Eastern and southern Africa, 15-21 June, 1982, Nairobi, Kenya. : Canadian Center of Science and Education Abstract
Barongo, J.O.,1982. Proceedings of the regional seminar on geothermal energy in Eastern and southern Africa, 15-21 June, 1982, Nairobi, Kenya.

1977

O, PROFBARONGOJUSTUS.  1977.  Barongo, J.O., 1977. Magnetic model theory in the analysis of vertical gradient anomalies, M.Sc. thesis,. Queen. : Canadian Center of Science and Education Abstract
n/a

UoN Websites Search