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Zhu, T. (author), Ertsen, M.W. (author), Van de Giesen, N.C. (author)The Hohokam, an irrigation-based society in the American South West, used the river valleys of the Salt and Gila Rivers between 500 and 1500 AD to grow their crops. Such irrigated crops are linking human agency, water sources and the general natural environment. In order to grow crops, water available through rain and river flows needs to be...journal article 2015
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- Ur, J. (author), Ertsen, M.W. (author) journal article 2015
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- Ertsen, M.W. (author) journal article 2015
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Pramana, K.E.R. (author), Ertsen, M.W. (author), Van de Giesen, N.C. (author)Many small-scale water development initiatives are accompanied by hydrological research to study either the shape of the intervention or its impacts. Humans influence both, and thus one needs to take human agency into account. This paper focuses on the effects of human actions in the intervention and its associated hydrological research, as...journal article 2015
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Zhu, T. (author), Ertsen, M.W. (author), Van der Giesen, N.C. (author)The Hohokam, an irrigation-based society in the American South West, used the river valleys of the Salt and Gila Rivers between 500 and 1500 AD to grow their crops. Such irrigated crops are linking human agency, water sources and the general natural environment. In order to grow crops, water available through rain and river flows needs to be...journal article 2015
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- Ertsen, M.W. (author), Murphy, J. (author), Purdue, L. (author) journal article 2015
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- Ngugi, K. (author), Ertsen, M.W. (author) journal article 2015
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- Ngugi, K. (author), Ogindo, H. (author), Ertsen, M.W. (author) journal article 2015
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- Ertsen, M.W. (author) journal article 2015
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Pande, S. (author), Ertsen, M. (author), Sivapalan, M. (author)While the proposed model is a rather simple model of a coupled human–water system, it is shown to be capable of replicating patterns of technological, population, production and consumption per capita changes. The model demonstrates that technological change may indeed ameliorate the effects of increasing water scarcity, but typically it does so...journal article 2014
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Pande, S. (author), Ertsen, M.W. (author)We propose and test the theory of endogenous change in societal institutions based on historical reconstructions of two ancient civilizations, the Indus and Hohokam, in two water-scarce basins, the Indus Basin in the Indian subcontinent and the lower Colorado Basin in the southwestern United States. In our reconstructions, institutions are...journal article 2014
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Ertsen, M.W. (author), Murphy, J.T. (author), Purdue, L.E. (author), Zhu, T. (author)When simulating social action in modeling efforts, as in socio-hydrology, an issue of obvious importance is how to ensure that social action by human agents is well-represented in the analysis and the model. Generally, human decision-making is either modeled on a yearly basis or lumped together as collective social structures. Both responses are...journal article 2014
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Ertsen, M.W. (author), Murphy, J.T. (author), Purdue, L.E. (author), Zhu, T. (author)When simulating social action in modeling efforts, as in socio-hydrology, an issue of obvious importance is how to ensure that social action by human agents is wellrepresented in the analysis and the model. Generally, human decision-making is either modeled on a yearly basis or lumped together as collective social structures. Both responses are...journal article 2013
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Pande, S. (author), Ertsen, M. (author), Sivapalan, M. (author)The ancient civilization in the Indus Valley civilization dispersed under extreme dry conditions; there are indications that the same holds for many other ancient societies. Even contemporary societies, such as the one in Murrumbidgee river basin in Australia, have started to witness a decline in overall population under increasing water...journal article 2013
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Pande, S. (author), Ertsen, M.W. (author)We propose and test the theory of endogenous change based on historical reconstructions of two ancient civilizations, Indus and Hohokam, in two water scarce basins, the Indus basin in the Indian subcontinent and the Lower Colorado basin in Southwestern United States. The endogenous institutional change sees changes in institutions as a sequence...journal article 2013
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Kazmi, S.I.H.S. (author), Ertsen, M.W. (author), Asi, M.R. (author)Introduction of the large gravity irrigation system in the Indus Basin in the late nineteenth century without a drainage system resulted in a rising water table, which resulted in water logging and salinity problems over large areas. In order to cope with the salinity and water logging problem, the Pakistan government initiated installation of...journal article 2012
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Ertsen, M.W. (author)Human activity is key in understanding ancient irrigation systems. Results of short term actions build up over time, affecting civilizations on larger temporal and spatial scales. Irrigation systems, with their many entities, social and physical, their many interactions within a changing environment and emergent properties, are typical examples...conference paper 2011
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Ertsen, M. (author), Lund, J. (author)In both the Netherlands and in California, USA, river flooding has been important in the last two centuries. In the Netherlands, the rivers Rijn, Waal and Maas repeatedly flooded large areas; in California, the Sacramento River and its tributaries regularly caused heavy flooding. A shared characteristic in both regions is that early...conference paper 2011
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Ertsen, M. (author), Kazmi, S.I.H.S. (author)A survey of tube wells was carried out in a surface hydrological unit (distributary canal command area) in Rechna Doab of the Punjab, Pakistan and results were compared with a tube well census conducted in the same area 20 years ago to update knowledge of the groundwater abstraction structures and find the changes occurring over two decades....conference paper 2011
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Ertsen, M.W. (author)In the early 19th century, the Dutch colonial power started to build irrigation works. A main problem for Dutch irrigation engineers on Java was how to ensure that the structures they built remained intact. The peak discharge regime of a river was an issue closely related to dam safety. Modifying the approach of Swiss engineer Lauterburg (1877),...journal article 2011
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