GP-RSS Symposium

2/8/24, 5:44 AM

International Joint Graduate Programin Resilience and Safety Studies (GP-RSS), Tohoku University

India – Japan Joint Researchon policy-making support framework for disaster risk reduction
and sustainable urban development
Session 1: Understanding Natural Hazard Exposure (13:30 – 15:45)
Seismic Risk (13:30 – 15:00)§ Probabilistic Seismic Risk Assessment of the Building Infrastructure in Mumbai city
Dr. Manish Kumar (Associate Professor, Department of Civil Engineering, IIT Bombay)§ Control and identification of nonlinear structural systems for earthquake engineering
Dr. Ryuta Enokida (Associate Professor, International Research Institute of Disaster Science, Tohoku University)§ Rapid Assessment of Railway Bridges after Seismic Event
Dr. Alok Goyal (Professor, Department of Civil Engineering, IIT Bombay)§ Investigation on Building Damage Rates and Ground-Motion Characteristics in the 2011
Tohoku Earthquake, Japan
Dr. Susumu Ohno (Associate Professor, International Research Institute of Disaster Science, Tohoku University)§ Repurposing telecom fibers for urban seismic hazard assessment
Dr. Bharath Shekar (Associate Professor, Department of Earth Sciences, IIT Bombay)

Flood Risk (15:00 – 15:45)§ Managing water infrastructure: engineering and social aspects
Dr. Riddhi Singh (Associate Professor, Civil Engineering Department, IIT Bombay)§ Flood adaptation and mitigation in Japan under climate change
S C RO L L

Dr. So Kazama (Professor, Graduate School of Engineering, Tohoku University)

Session 2: Formulating and Implementing DRR (16:00 – 17:50)
Disaster Risk Reduction in Mumbai, India (16:00 – 16:30)

https://www.ggi.tohoku.ac.jp§ A disaster risk management master plan (DRMMP) for Mumbai - Key considerations
Dr. Ravi Sinha (Professor, Department of Civil Engineering, IIT Bombay)

Socio-economic factors for DRR (16:30-17:50)§ Investment for resilience and reducing poverty through flood control
Dr. Akiyuki Kawasaki (Professor, Institute for Future Initiatives and Dept. Civil Eng., The University of Tokyo)§ City in the water, water in the city: anthropological perspectives
Dr. Aya Ikegame (Professor, Graduate School of Asian and African Area Studies, Kyoto University)§ Spatial analysis of real estate price data: Two different approaches focusing on spatial autocorrelationand spatial heterogeneity
Dr. Ryo Inoue (Associate Professor, the Graduate School of Information Sciences, Tohoku University)

Session 1: Understanding Natural Hazard Exposure
Seismic Risk (13:30 – 15:00)
Manish Kumar, Ph.D.
Associate Professor, Department of Civil Engineering, IIT Bombay
Title: “Probabilistic Seismic Risk Assessment of the Building Infrastructure in Mumbai city”
The talk will discuss the methodology for probabilistic seismic risk assessment of the building
infrastructure in Mumbai city. Different aspects of the methodology and the underlying concepts(e.g., seismic hazard assessment, fragility, loss calculation) would be discussed. The proposed
methodology would help in identifying critical infrastructure issues that may need special attention
and would assist in future decision-making related to city planning and expansion.

Ryuta Enokida, Ph.D.
Associate Professor, International Research Institute of Disaster Science, Tohoku University
Title: “Control and identification of nonlinear structural systems for earthquake engineering”

Structural systems at earthquakes often exhibit severe nonlinear characteristics due to the structural
damage or large responses. Understanding the characteristics is a key to controlling seismic responses
and maintaining structures at the post-earthquake situation. We introduce our latest research on
controlling actuation systems involving nonlinear systems, monitoring seismically damaged structuresand realizing a cost-effective base isolation system.

Alok Goyal, Ph.D.
Professor, Department of Civil Engineering, IIT Bombay
Title: “Rapid Assessment of Railway Bridges after Seismic Event”

Rapid assessment of a large number of railway bridges, essential to supply chain for post seismic event relief
and recovery, is required in a very short duration to assess their functionality. A two-way approach forbridges is to first use global indices to identify any distress or loss of integrity, and then do the detailed
inspection and testing to quantify the damage. There are two major constraints in developing a workablesystem: it should enable rapid bridge integrity assessment for a large number of bridges, and the measured
variables should have engineering significance in a decision support system. One of the research proposals
initiated by Indian Railways is to develop framework for creating and updating database of structural
performance parameters under standard loads based on field measurements so that these parameters
could be rapidly measured and used to assess the condition of bridge for operational purpose.

Susumu Ohno, Ph.D.
Associate Professor, International Research Institute of Disaster Science, Tohoku University
Title: “Investigation on Building Damage Rates and Ground-Motion Characteristics in the 2011
Tohoku Earthquake, Japan”
The survey results for building vibration damages in Iwate, Miyagi, Fukushima prefectures caused by
the 2011 Tohoku earthquake (M9.0), Japan, are summarized. Relationships between damage rates andstrong motion indices are investigated for wooden buildings with the classification by building age. The
period and damping dependence of damage rates are discussed and fragility curves for wooden houses
are estimated.

Bharath Shekar, Ph.D.
Associate Professor, Department of Earth Sciences, IIT Bombay
Title: “Repurposing telecom fibers for urban seismic hazard assessment
The ubiquitous fiber optic cables in urban areas may be repurposed for seismic hazard monitoring. By”
installing
distributed acoustic sensing (DAS) interrogators at regular intervals, the telecom fibers canProfessor,
Goals Initiative,
Tohokusensors.
UniversitybeconvertedGreen
into thousandsof virtual seismic
In this talk, we will discuss a few case studies
and explore the possibility of urban seismic hazard assessment with such DAS systems.

Session 1: Understanding Natural Hazard Exposure

Flood Risk (15:00 – 15:45)
Riddhi Singh, Ph.D.
Associate Professor, Department of Civil Engineering, IIT Bombay
Title: “Managing water infrastructure: engineering and social aspects”

Planning of large water infrastructure remains critical for socioeconomic development globally.
I will highlight key challenges that emerge while designing such projects that involve multiple
stakeholders and have multi-decadal life time. These concepts and mathematical approaches arealso relevant for disaster risk reduction. The talk ends with an overview of flood risks in Mumbai
with a focus on socioeconomic aspects.

So Kazama, Ph.D.
Professor, Graduate School of Engineering, Tohoku University
Title: “Flood adaptation and mitigation in Japan under climate change”
A flood simulation is applied to whole Japan to evaluate impacts in the future and adaptation
options. 2D non-uniform flow is modeled to obtain the inundation depth and duration, which areused for calculation of flood damage in each land use according to the economic manual for flood
protection.

Session 2: Formulating and Implementing DRR (16:00 – 17:50)
Disaster Risk Reduction in Mumbai, India (16:00 – 16:30)
Ravi Sinha, Ph.D.
Professor, Department of Civil Engineering, IIT Bombay
Title: “A disaster risk management master plan (DRMMP) for Mumbai - Key considerations”
Mumbai is India’s largest city and its commercial capital. About 60 percent of Mumbai‘s population of
approximately 13 million lives in slums, which are particularly vulnerable to disasters. Furthermore, asignificant number of non-slum buildings are found to be dilapidated. Mumbai‘s transport, watersupply, sewerage, storm water drainage, and solid waste disposal systems are also highly vulnerable.
The city experiences frequent hydro-meteorological disasters and has moderate seismic risk. A Disaster
Risk Management Master Plan (DRMMP) for Greater Mumbai was recently developed. The key
considerations of DRMMP will be discussed during the seminar.

Session 2: Formulating and Implementing DRR (16:00 – 17:50)

Socio-economic factors for DRR (16:30-17:50)
Akiyuki Kawasaki, Ph.D.
Professor, Institute for Future Initiatives and Dept. Civil Eng., The University of Tokyo
Title: “Investment for resilience and reducing poverty through flood control”” Our aim is to support the formulation of investment plans that contribute to reducing flooding andpoverty through climate adaptation, with the goal of correcting socio-economic disparities andpromoting development. This presentation summarizes the field studies on widening inequality due
to recurrent flooding and a modeling exercise on the improvement of livelihoods of residents inducedby flood control measures.

Aya Ikegame, Ph.D.
Professor, Graduate School of Asian and African Area Studies, Kyoto University
Title: “City in the water, water in the city: anthropological perspectives”

Mumbai, a city made up of scattered islands in a swamp, has become a major commercial hub in theworld. However, water poses a significant challenge for the city, as it weakens the city's structure andcauses scarcity for its population of over 21 million people. This presentation focuses on recent
literature related to Mumbai's water issues from an anthropological perspective.

Ryo Inoue, Ph.DAssociate Professor, the Graduate School of Information Sciences, Tohoku UniversityTitle: “Spatial analysis of real estate price data: Two different approaches focusing on spatial
autocorrelation and spatial heterogeneity”
I will introduce two approaches to real estate price data analysis that I have been working on. The
first half of the presentation will introduce the estimation (interpolation) of real estate prices at
any time and place, focusing on spatio-temporal autocorrelation. Then, the second half will
introduce an analysis of the geographic segmentation of the real estate market, where theevaluation of the determinants of real estate prices differ from place to place, focusing on spatial
heterogeneity.

Moderator:
Kozo Nagami, Ph.D.
Specially Appointed Professor, Green Goals Initiative, Tohoku University

Commentators:
Tatsuhiko Kono, Ph.D.
Professor, Graduate School of Information Sciences, Tohoku University

Daisuke Komori, Ph.D.
Specially Appointed Professor, Green Goals Initiative, Tohoku University

Yo Fukushima, Ph.D.
Associate Professor, International Research Institute of Disaster Science, Tohoku University

Sediqi Mohammad Naser, Ph.D.
Post-doctoral research fellow, Green Goals Initiative, Tohoku University

Venue & Time
March 8, 2024 (13:30 p.m. – 18:00 p.m.)

Main conference room, 3rd floor, GSES main building
AOBAYAMA CAMPUS TOHOKU UNIVERSITY