David Khan - Academia.edu (original) (raw)

Papers by David Khan

Research paper thumbnail of Back to the future: Assessing the damage of 2004 DHAKA FLOOD in The 2050 urban environment

Journal of Flood Risk Management, 2015

Planning to make a city flood resilient needs the proper assessment of future conditions. Urban g... more Planning to make a city flood resilient needs the proper assessment of future conditions. Urban growth models are being used as a planning tool for city development. Within the CORFU project, flood management strategies suitable for cities with varied geographic and socioeconomic conditions have been developed. In the paper, we adopted urban growth model to project the possible future conditions of Dhaka City, the rapidly developing capital of Bangladesh. Bangladesh lies in the delta of the Himalayan Mountain range and experiences frequent flooding. In 2004 an extreme nationwide flood event occurred, which caused major damage to Dhaka City. If the same event were to occur in 2050, it can be expected that the damage would increase significantly. Through the application of the urban growth, hydraulic, and damage assessment models, we were able to determine the damage that can be expected to happen in 2050. The paper also describes the key factors that are important to determine this impact and the associated uncertainties.

Research paper thumbnail of From hazard to impact: flood damage assessment tools for mega cities

Natural Hazards, 2016

Your article is published under the Creative Commons Attribution license which allows users to re... more Your article is published under the Creative Commons Attribution license which allows users to read, copy, distribute and make derivative works, as long as the author of the original work is cited. You may selfarchive this article on your own website, an institutional repository or funder's repository and make it publicly available immediately.

Research paper thumbnail of A new methodology for modelling of health risk from urban flooding exemplified by cholera - Case Dhaka, Bangladesh

Journal of Flood Risk Management, 2015

 Users may download and print one copy of any publication from the public portal for the purpose... more  Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

Research paper thumbnail of Flood damage assessment for Dhaka City, Bangladesh

Research for Policy and Practice, 2012

Flood damage assessment is a key component in the development of city flood risk management strat... more Flood damage assessment is a key component in the development of city flood risk management strategies. A flood damage assessment model is being developed by combining flood hazard information (depth, extent, velocity, duration, etc.) with geographic information (land use/cover, buildings, infrastructure, etc.), social-economic data and population demographics to estimate urban flood impacts. In this paper, Dhaka city is adopted to demonstrate the approach for damage modeling. Analysis show that coarse resolution modeling in such a densely developed urban area can lead to either over-or underestimation of the flood damage, depending on the thresholds to distinguish building and non-building cells in modeling. Increased accuracy can be achieved by fine resolution modeling but this would lead to large data sets that require long computational times. The paper demonstrates some key issues for damage assessment using advanced technology for a City like Dhaka.

Research paper thumbnail of The Corfu Project and Its Work in Dhaka

Research paper thumbnail of The development of a flood damage assessment tool for urban areas

Research paper thumbnail of Back to the future: Assessing the impact of the 2004 flood in Dhaka in 2050

Planning to make a city flood resilient needs proper assessment of the future conditions. Urban g... more Planning to make a city flood resilient needs proper assessment of the future conditions. Urban growth models are being used as a planning tool for City development. Within the CORFU project flood management strategies will be developed suitable for cities with varied geographic and socioeconomic conditions. This paper studies the application of Urban Growth Model (UDM) to determine the future condition of Dhaka City, which a rapidly developing capital of Bangladesh. Bangladesh lies in the delta of the Himalayan Mountain range and experiences frequent flooding. In 2004 an extreme flood event occurred in the country, which caused major damage to Dhaka City. If the same event occurs in 2050, it can be expected that the damage would increase significantly. Through application of urban growth model, urban flood model and damage model the damage that can be expected to happen in 2050 was determined in this paper. The paper also describes the key factors that are important to determine this impact and the associated uncertainties.

Research paper thumbnail of Contemporary Approach to Flood Risk Management

Flooding is a natural phenomenon which cannot be prevented. However, human activity is contributi... more Flooding is a natural phenomenon which cannot be prevented. However, human activity is contributing to an increase in the likelihood and adverse impacts of extreme flood events. The scale and frequency of floods are likely to increase due to climate change-which will bring higher intensity of rainfall and rising sea levels-as well as to inappropriate river management and construction in flood plains which reduces their capacity to absorb flood waters. Agencies within the Govt. are already taking flood protection measures but concerted and coordinated action at the level of the Community would bring a considerable added value and improve the overall level of flood protection.

Research paper thumbnail of Back to the future: Assessing the damage of 2004 DHAKA FLOOD in The 2050 urban environment

Journal of Flood Risk Management, 2015

Planning to make a city flood resilient needs the proper assessment of future conditions. Urban g... more Planning to make a city flood resilient needs the proper assessment of future conditions. Urban growth models are being used as a planning tool for city development. Within the CORFU project, flood management strategies suitable for cities with varied geographic and socioeconomic conditions have been developed. In the paper, we adopted urban growth model to project the possible future conditions of Dhaka City, the rapidly developing capital of Bangladesh. Bangladesh lies in the delta of the Himalayan Mountain range and experiences frequent flooding. In 2004 an extreme nationwide flood event occurred, which caused major damage to Dhaka City. If the same event were to occur in 2050, it can be expected that the damage would increase significantly. Through the application of the urban growth, hydraulic, and damage assessment models, we were able to determine the damage that can be expected to happen in 2050. The paper also describes the key factors that are important to determine this impact and the associated uncertainties.

Research paper thumbnail of From hazard to impact: flood damage assessment tools for mega cities

Natural Hazards, 2016

Your article is published under the Creative Commons Attribution license which allows users to re... more Your article is published under the Creative Commons Attribution license which allows users to read, copy, distribute and make derivative works, as long as the author of the original work is cited. You may selfarchive this article on your own website, an institutional repository or funder's repository and make it publicly available immediately.

Research paper thumbnail of A new methodology for modelling of health risk from urban flooding exemplified by cholera - Case Dhaka, Bangladesh

Journal of Flood Risk Management, 2015

 Users may download and print one copy of any publication from the public portal for the purpose... more  Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

Research paper thumbnail of Flood damage assessment for Dhaka City, Bangladesh

Research for Policy and Practice, 2012

Flood damage assessment is a key component in the development of city flood risk management strat... more Flood damage assessment is a key component in the development of city flood risk management strategies. A flood damage assessment model is being developed by combining flood hazard information (depth, extent, velocity, duration, etc.) with geographic information (land use/cover, buildings, infrastructure, etc.), social-economic data and population demographics to estimate urban flood impacts. In this paper, Dhaka city is adopted to demonstrate the approach for damage modeling. Analysis show that coarse resolution modeling in such a densely developed urban area can lead to either over-or underestimation of the flood damage, depending on the thresholds to distinguish building and non-building cells in modeling. Increased accuracy can be achieved by fine resolution modeling but this would lead to large data sets that require long computational times. The paper demonstrates some key issues for damage assessment using advanced technology for a City like Dhaka.

Research paper thumbnail of The Corfu Project and Its Work in Dhaka

Research paper thumbnail of The development of a flood damage assessment tool for urban areas

Research paper thumbnail of Back to the future: Assessing the impact of the 2004 flood in Dhaka in 2050

Planning to make a city flood resilient needs proper assessment of the future conditions. Urban g... more Planning to make a city flood resilient needs proper assessment of the future conditions. Urban growth models are being used as a planning tool for City development. Within the CORFU project flood management strategies will be developed suitable for cities with varied geographic and socioeconomic conditions. This paper studies the application of Urban Growth Model (UDM) to determine the future condition of Dhaka City, which a rapidly developing capital of Bangladesh. Bangladesh lies in the delta of the Himalayan Mountain range and experiences frequent flooding. In 2004 an extreme flood event occurred in the country, which caused major damage to Dhaka City. If the same event occurs in 2050, it can be expected that the damage would increase significantly. Through application of urban growth model, urban flood model and damage model the damage that can be expected to happen in 2050 was determined in this paper. The paper also describes the key factors that are important to determine this impact and the associated uncertainties.

Research paper thumbnail of Contemporary Approach to Flood Risk Management

Flooding is a natural phenomenon which cannot be prevented. However, human activity is contributi... more Flooding is a natural phenomenon which cannot be prevented. However, human activity is contributing to an increase in the likelihood and adverse impacts of extreme flood events. The scale and frequency of floods are likely to increase due to climate change-which will bring higher intensity of rainfall and rising sea levels-as well as to inappropriate river management and construction in flood plains which reduces their capacity to absorb flood waters. Agencies within the Govt. are already taking flood protection measures but concerted and coordinated action at the level of the Community would bring a considerable added value and improve the overall level of flood protection.