Zelalem Bedaso - Academia.edu (original) (raw)

Papers by Zelalem Bedaso

Research paper thumbnail of Climatic controls on the triple oxygen isotope composition of East African monsoon precipitation and implications for speleothem paleoclimate reconstructions

AGU Fall Meeting Abstracts, Dec 1, 2020

Research paper thumbnail of Daily Precipitation Isotope Variation in Midwestern United States: Implication for Hydroclimate and Moisture Sources

AGU Fall Meeting Abstracts, Dec 1, 2019

Research paper thumbnail of Establishing terrestrial paleoclimate interpretive framework for modern biogenic carbonate from Ethiopia and the East African Rift System

AGU Fall Meeting Abstracts, Dec 1, 2019

Research paper thumbnail of Carbon and oxygen isotopic signature of tooth enamel as a proxy for the Pliocene paleoenvironment and paleoclimate from Mt. Galili Formation, Ethiopia

Research paper thumbnail of Modelling Harmful Algal Blooms in Saginaw Bay using Sentinel-2 MSI Data

AGU Fall Meeting 2021, Dec 17, 2021

Research paper thumbnail of Environmental controls on the hydrogen isotopic composition of volcanic glass from the Southern Afar rift, eastern Ethiopia

Research paper thumbnail of Assessment of Surface and Groundwater Interaction Using Environmental Isotope Tracers in Fiche, Central Ethiopia

AGU Fall Meeting Abstracts, Dec 1, 2020

Research paper thumbnail of Effect of exclosure on subsurface water level and sediment yield in the tropical highlands of Ethiopia

Journal of Environmental Management

Research paper thumbnail of Miocene to Pliocene Stratigraphy and Paleoecology of Galili, Ethiopia

African Paleoecology and Human Evolution

Research paper thumbnail of Applications of Carbonate Geochemistry to Determining the Role of Climate Change in Hominin Evolution

AGU Fall Meeting Abstracts, Dec 10, 2020

Research paper thumbnail of Quantifying the effect of moisture source and transport on the precipitation isotopic variations in northwest ethiopian highland

Journal of Hydrology, 2021

Research paper thumbnail of Quantifying Seasonal Groundwater Recharge Under Changing Climate in Dayton, Oh: An Isotope Mass Balance Approach

Research paper thumbnail of Characterizing surface water and groundwater interaction for sustainable water resources management in southwestern Ohio

Sustainable Water Resources Management

Research paper thumbnail of Palodietary reconstructions of Plio-Pleistocene Bovids from the Shungura Formation, Omo, Ethiopia using stable isotopes; Implication for Hominin environments

Research paper thumbnail of Data for: Spatial and temporal variation in the isotopic composition of Ethiopian precipitation

Research paper thumbnail of Contribution of ice and snowmelt to surface water flow and groundwater recharge in the Rocky Mountain region, Colorado, USA

Research paper thumbnail of Temporal and spatial variability of water isotopes in Ethiopian rainfall and its implication for moisture sources

Research paper thumbnail of Testing Hypotheses for the Role of Climate Change in Hominin Evolution Using the Geochemistry of Carbonates from the East African Rift System

A series of major hominin speciation events that took place in East Africa during the Pliocene-Pl... more A series of major hominin speciation events that took place in East Africa during the Pliocene-Pleistocene epochs have been linked to landscape evolution. Previous studies examining the role of climatic and environmental pressures on hominin evolution have used either discontinuous outcrops exposed proximal to, or marine sediments distal from, hominid fossil sites. These sediments have been used to develop stable carbon and oxygen isotope (δ13C, δ18O) proxy-based reconstructions of ancient environments, showing evidence for a series of changes including a transition from woodland to savannah-dominated environments. This work has prompted researchers to hypothesize that speciation events coincided with cooling of the African climate and local aridification during times of glacial intensification. It is speculated that local environmental pressures led to an increase in brain size, breakthroughs in stone technology, and the migration of Homo sapiens out of Africa. However, recent clum...

Research paper thumbnail of Dual Isotope Tracing of Nitrate Contaminant Source in Surface and Groundwater in the Great Miami River Watershed , Southwestern Ohio

Research paper thumbnail of Pliocene Paleoenvironments of the Awash Valley, Ethiopia: The Isotope Record of Tooth Enamel and its Relevance to the Pliocene Paleoclimate of Northeastern Africa

Understanding patterns of Pliocene environmental and climate change using data from terrestrial d... more Understanding patterns of Pliocene environmental and climate change using data from terrestrial deposits helps to identify factors which govern the climate, and to unravel potential links between regional and global climate conditions. We use the stable carbon (C) and oxygen (O) isotopic composition of bioapatite from fossil tooth enamel to reconstruct Pliocene environmental and climatic changes at Dikika and Galili,

Research paper thumbnail of Climatic controls on the triple oxygen isotope composition of East African monsoon precipitation and implications for speleothem paleoclimate reconstructions

AGU Fall Meeting Abstracts, Dec 1, 2020

Research paper thumbnail of Daily Precipitation Isotope Variation in Midwestern United States: Implication for Hydroclimate and Moisture Sources

AGU Fall Meeting Abstracts, Dec 1, 2019

Research paper thumbnail of Establishing terrestrial paleoclimate interpretive framework for modern biogenic carbonate from Ethiopia and the East African Rift System

AGU Fall Meeting Abstracts, Dec 1, 2019

Research paper thumbnail of Carbon and oxygen isotopic signature of tooth enamel as a proxy for the Pliocene paleoenvironment and paleoclimate from Mt. Galili Formation, Ethiopia

Research paper thumbnail of Modelling Harmful Algal Blooms in Saginaw Bay using Sentinel-2 MSI Data

AGU Fall Meeting 2021, Dec 17, 2021

Research paper thumbnail of Environmental controls on the hydrogen isotopic composition of volcanic glass from the Southern Afar rift, eastern Ethiopia

Research paper thumbnail of Assessment of Surface and Groundwater Interaction Using Environmental Isotope Tracers in Fiche, Central Ethiopia

AGU Fall Meeting Abstracts, Dec 1, 2020

Research paper thumbnail of Effect of exclosure on subsurface water level and sediment yield in the tropical highlands of Ethiopia

Journal of Environmental Management

Research paper thumbnail of Miocene to Pliocene Stratigraphy and Paleoecology of Galili, Ethiopia

African Paleoecology and Human Evolution

Research paper thumbnail of Applications of Carbonate Geochemistry to Determining the Role of Climate Change in Hominin Evolution

AGU Fall Meeting Abstracts, Dec 10, 2020

Research paper thumbnail of Quantifying the effect of moisture source and transport on the precipitation isotopic variations in northwest ethiopian highland

Journal of Hydrology, 2021

Research paper thumbnail of Quantifying Seasonal Groundwater Recharge Under Changing Climate in Dayton, Oh: An Isotope Mass Balance Approach

Research paper thumbnail of Characterizing surface water and groundwater interaction for sustainable water resources management in southwestern Ohio

Sustainable Water Resources Management

Research paper thumbnail of Palodietary reconstructions of Plio-Pleistocene Bovids from the Shungura Formation, Omo, Ethiopia using stable isotopes; Implication for Hominin environments

Research paper thumbnail of Data for: Spatial and temporal variation in the isotopic composition of Ethiopian precipitation

Research paper thumbnail of Contribution of ice and snowmelt to surface water flow and groundwater recharge in the Rocky Mountain region, Colorado, USA

Research paper thumbnail of Temporal and spatial variability of water isotopes in Ethiopian rainfall and its implication for moisture sources

Research paper thumbnail of Testing Hypotheses for the Role of Climate Change in Hominin Evolution Using the Geochemistry of Carbonates from the East African Rift System

A series of major hominin speciation events that took place in East Africa during the Pliocene-Pl... more A series of major hominin speciation events that took place in East Africa during the Pliocene-Pleistocene epochs have been linked to landscape evolution. Previous studies examining the role of climatic and environmental pressures on hominin evolution have used either discontinuous outcrops exposed proximal to, or marine sediments distal from, hominid fossil sites. These sediments have been used to develop stable carbon and oxygen isotope (δ13C, δ18O) proxy-based reconstructions of ancient environments, showing evidence for a series of changes including a transition from woodland to savannah-dominated environments. This work has prompted researchers to hypothesize that speciation events coincided with cooling of the African climate and local aridification during times of glacial intensification. It is speculated that local environmental pressures led to an increase in brain size, breakthroughs in stone technology, and the migration of Homo sapiens out of Africa. However, recent clum...

Research paper thumbnail of Dual Isotope Tracing of Nitrate Contaminant Source in Surface and Groundwater in the Great Miami River Watershed , Southwestern Ohio

Research paper thumbnail of Pliocene Paleoenvironments of the Awash Valley, Ethiopia: The Isotope Record of Tooth Enamel and its Relevance to the Pliocene Paleoclimate of Northeastern Africa

Understanding patterns of Pliocene environmental and climate change using data from terrestrial d... more Understanding patterns of Pliocene environmental and climate change using data from terrestrial deposits helps to identify factors which govern the climate, and to unravel potential links between regional and global climate conditions. We use the stable carbon (C) and oxygen (O) isotopic composition of bioapatite from fossil tooth enamel to reconstruct Pliocene environmental and climatic changes at Dikika and Galili,