Different Methods Of Upper Awash River Basin - 1000 Words

Climate elements (temperature, humidity, sunshine hours, wind speed, rainfall) and their interaction with other physical features determine the hydrological process such as rainfall, runoff, recharge, and stream flow generation. To assess the hydrological processes of Upper Awash river basin, analysis of hydro-meteorological elements have been done. Different techniques have been utilized to estimate hydro-meteorological variables. Prior evaluation of quality and distribution of the data have been checked by comparing observation data with a set of global climate layers (climate grids) with a spatial resolution of about 1 square kilometer (Hijmans, R.J et. al, 2005). Due to large topographic variations in the area (1738m-3542m, a.s.l.),†¦show more content†¦Only one station at Addis Ababa belong to this class. Class 3 stations are ordinary stations which records only temperature and precipitation and class 4 record only precipitation. 9 stations in the study area fall in between class 1 and class 4 types. No Station name UTME UTMN Elevation (m asl) Recording stared End of recording Class 1 Addis Ababa Observ. 502269 1011468 2378 1951 2015 1st 2 Addis Alem 473600 997565 2333 1962 2015 3rd 3 Bantu Liben 432133 999345 2171 1961 2015 4th 4 Boneya 430262 976274 2202 1974 2015 4th 5 Busa 456992 951546 2171 1963 2015 4th 6 Ginchi 443716 976994 2223 1962 2015 4th 7 Holeta 429158 952527 2304 1969 2012 3rd 8 Lemen 461179 974616 2007 2007 2015 4th 9 Sendafa 420962 985993 2546 1954 2015 4th 10 Tefki 424075 1000244 2082 2010 2015 4th 11 Teji 405616 997900 2054 1961 2015 4th Table 3.1 Meteorological stations As shown in Figure 2.1, there is fair spatial distribution of meteorological stations in the study area. Most of the stations are with more than 40 years of rainfall records with time series of rainfall measurements from 1961-2015. But, there are data gaps and different recording periods. Therefore, in addition to meteorological records, a set of global climate layers (climate grids) with a spatial resolution of about 1 square kilometer has been used from Global Climate Data for the purpose of validatingShow MoreRelatedArchaeology Notes19985 Words   |  80 Pagesprocesses operating today are also those that operated in the past and thus they can explain the fossil and geological record. Chapter 1 INTRODUCTION In this chapter we will examine fossils in geological context, geological timescales and dating methods. FOSSILS IN GEOLOGICAL CONTEXT Techniques developed over a period of the 50 years allow scientists to provide a more accurate context of our understanding of the evolutionary past. To understand the past we study fossils. As preserved remnants ofRead MoreAnchor Terminology7977 Words   |  32 Pagesmetal air-tight tank built into a boat to insure flotation even when the boat is swamped. Alee: To the leeward side (away from the wind). Alive: Alert (pep it up!). All hands: The entire crew. All standing: To bring to a sudden stop. Aloft: Above the upper deck (above). Alongside: Side to side. Amidships: In or towards the middle of a ship in regard to length or breadth (center of). Anchor: A device or iron so shaped to grip the bottom and holds a vessel at anchor by the anchor chain. Anchor bar: Wooden