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Dr. Asfawossen Asrat Kassaye
Associate Professor
Earth Sciences
Addis Ababa University
School of Earth Sciences, Addis Ababa University
4-Killo Campus
1176 Addis Ababa
Addis Ababa
Ethiopia
...
251-11-1239462
251-91-1407553
www.aau.edu.et
http://www.researchgate.net/profile/Asfawossen_Asrat
Expertise & Interests
| Overview / specialty | In the broad field of Earth Sciences (Geology) in many sub-disciplines including Quaternary Geology – Paleoclimatology – Environmental studies; using various geological archives (cave sediments, speleothems, lake sediments, soils, geomorphological transects) and geochemical, stratigraphic, petrological as well as isotopic proxies to the reconstruction of the Quaternary climate and environmental as well as archaeological history of Ethiopia; understanding of future climate variability, impacts, and possible mitigation and adaptation measures. |
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| Official PAGES function(s) | PAGES SSC Member | |
| Official functions (outside of PAGES) | Teaching/Research |
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| PAGES interests | 2k Network, Africa2k, Regional Integration, Future Earth |
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| Topics | Biogeochemical processes, Chronology, Extreme events, Human impacts & interactions, Interannual-decadal varaibility, Monsoon, Proxy development, Sustainability, Thresholds and abrupt changes, Volcanoes, Water | |
| Timescales | Anthropocene (last 100 years), Future projection, Holocene, Last millennia, Last glacial cycle, Observational period, Pleistocene | |
| Regions | Africa, Tropics/subtropics | |
| Archives | Archeology, Documentary records, Fluvial deposits, Geomorphology, Instrumental records, Lake sediments, Soil, Speleothems | |
| Sector | Academia / Education, Research, Science policy | |
| Discipline | Archeology, Chronology, Geochemistry, Geomorphology, (Paleo)climatology, Sedimentology |
Publications
Foerster, V., Vogelsang, R., Junginger, A., Asrat, A., Lamb, H., Schaebitz, F., Trauth, M.H. (2015) Environmental change and human occupation of southern Ethiopia and northern Kenya during the last 20,000 years. Quaternary Science Reviews, 129: 333-340.
Asrat, A. (2015) Geology, Geomorphology, Geodiversity and Geoconservation of the Sof Omar Cave System, Southeastern Ethiopia. Journal of African Earth Sciences, 108: 47-63.
Winicoff, D., Flegal, J., Asrat, A. (2015) Engaging the Global South on Climate Engineering Research. Nature Climate Change, DOI: 10.1038/NCLIMATE2632, 627-634.
Pleurdeau, D., Hovers, E., Assefa, Z., Asrat, A., Pearson, O., Lam, Y. M. (2014) Cultural Change or Continuity in the Late MSA/Early LSA of southeastern Ethiopia? The site of Goda Buticha, Dire Dawa area. Quaternary International, 343: 117-135.
Assefa, Z., Pleurdeau, D., Duquesnoy, F., Hovers, E., Pearson, O., Asrat, A., T/Tsion, C., Lam, Y. M. (2013) Survey and explorations of caves in southeastern Ethiopia: Middle Stone Age and Later Stone Age archaeology and Holocene rock art. Quaternary International, 343:136-147.
Ahmed, M., Anchukaitis, K. J., Asrat, A., Borgaonkar, H. P., et al. (2013) Continental-scale temperature variability during the last two millennia. Nature Geosciences. DOI: 10.1038/NGEO1797, 1-8.
Nicholson, S.E., Nash, D.J., Chase, B.M., Grab, S. W., Asrat, A., Lézine, A-M., Shanahan, T. M., Verschuren, D., Umer, M. (2013) Temperature Variability over Africa during the Last 2000 Years. The Holocene, 23: 1875-1887.
Foerster, V., A. Juninger, O. Langkamp, T. Kassa, Asrat, A., M. Umer, H. Lamb, V. Wennrich, J. Rethemeyer, N. Nowaczyk, M. Trauth, F. Schaebitz (2011) Environmental changes in the Chew Bahir Basin, (southern Ethiopia) during the last 45 cal ka BP. Quaternary International, 274: 25-37.
Baker, A., Asrat, A., Leng, M., Thomas, L., Fairchild, I.J., Widmann, M., Dong, B., Van Calsteren, P., Bryant, C. (2010) Decadal-scale Holocene Climate Variability Recorded in an Ethiopian Stalagmite. The Holocene, 20: 827-836.
Gunn, J., Baker, A., Asrat, A. (2009) Caves of Mechara: The millennium expedition to Ethiopia. National Speleological Society Journal, June 2009: 4-7.
Coltorti, M., Cinque, A., Fubelli, G., Dramis, F., Abebe, B., Asrat, A. (2009) Late Holocene Environmental Changes and Present Day Geomorphic Processes in the Wugro Catchment (Wollo, Ethiopia). Geog. Fis. Dinam. Quat. 39: 129-134.
Asrat, A., Baker, A., Leng, M., Gunn, J., Umer, M. (2008) Environmental Monitoring in the Mechara caves, Southeastern Ethiopia: Implications for Speleothem Palaeoclimate Studies. International Journal of Speleology, 37: 207-220.
Asrat, A., Baker, A. (2008) Precipitation records of the last century reconstructed from annual growth rate parameters of two Ethiopian stalagmites. PAGES, 16: 22-24.
Kebede, S., Travi, Y., Asrat, A., Tamiru, A., Ayenew, T., Tessema. Z. (2008) Groundwater origin and flow along selected transects in East African rift volcanic aquifers. Hydrogeology Journal, 16: 55-73.
Asrat, A., Baker, A., Umer, M., Moss. J., Leng, M., Van Calstren, P., Smith, C. (2007) A high-resolution multi-proxy stalagmite record from Mechara, Southeastern Ethiopia: Paleohydrological implications for speleothem paleoclimate reconstruction. Journal of Quaternary Science, 22: 53-63.
Baker, A., Asrat, A., Fairchild, I. J., Leng, M. J., Wynn, P. M., Bryant, C., Genty, D., Umer, M. (2007) Analysis of the climate signal contained within ?18O and growth rate parameters in two Ethiopian stalagmites. Geochimicha Cosmochimica Acta, 71: 2975-2988.
Blyth, A. J., Asrat, A., Baker, A., Gulliver, P., Leng, M. J., Genty, D. (2007) A new approach to detecting vegetation and land use change using high-resolution lipid biomarker records in stalagmites. Quaternary Research, 68: 314-324.
Baker, A., Asrat, A., Umer, M, (2006) Mechara: a caving paradise in Southeastern Ethiopia. Speleology, 5: 18-20.