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Topic

Groundwater and Life: Progress towards the Solution of Critical Problems

Conveners: Ken Howard, Franklin W. Schwartz, Yanpei Cheng, Kyoochul Ha, Dong-Hun Kim

Groundwater is an essential source of water for humans and a critical resource necessary for the maintenance of ecosystems. However, this resource is exploited more and more because in most places groundwater is substantially undervalued. Papers submitted to this topical area will discuss how socioeconomic aspects of groundwater management need to be considered in order to preserve the value of groundwater resources. Humans have relied on the availability of groundwater even before civilization began. Yet as human populations have exploded, so to have waterborne illnesses associated with inappropriate disposal of waste. Nowadays, there are many places on Earth where people are routinely exposed to diseases through drinking contaminated groundwater. Understanding the associations of contaminated groundwater with human health represents an emerging area of interest and a focal area for presentations. In recent years, research on ecosystems has been increasing. This theme is reflected in a session dealing with the groundwater contributions to ecosystem sustainability with a goal of preserving the harmony between humans and nature. In this respect, the microbial characterization of groundwater environments is also becoming a critical component for ecosystem studies. Finally, a special session explores the roles for socio-hydrogeological studies and international cooperation on groundwater development in low-income countries.

 

Spotlight on Modeling, Emerging Technologies and Their Applications

Conveners: Eungyu Park, Irina Emelyanova, Jina Jeong

In the era of 4th industrial revolution, the value of non-conventional methods related to various groundwater issues are emphasized more than ever. The purpose of the proposed Topic is to introduce recent advancement of hydrogeological methods. Topic is focused on (but not restricted to) advanced and innovative techniques of monitoring, aquifer characterization, physically-based (i.e., PDE based) and data-driven (e.g., time-series analysis, artificial intelligence, etc.) modeling.

 

Global/Regional Environmental Changes and Their Consequencess

Conveners: Pham Quy Nhan, Pradip Bhattacharyya, Manish Kumar, Kangjoo Kim

Our world is changing rapidly and the understanding of causes, driving forces, and consequences of the change now become our imminent challenge for the future prosperity of humankind. This session is prepared to improve our understanding of the changing environments and, thus, to sapiently cope with the confronted challenges for our next generation. This session will focus on environmental changes, and their drivers and consequences from the perspective of water resources. This session will cover broad water related topics: quality and quantity issues for ground-/surface water, water problems arising from environmental changes, land planning/developments, and urbanization, and factors that derive the changes. We welcome investigations for the past episodes as an analog of present changes and any case studies that can enlarge our understanding of water environment including permafrost and climate change.

 

Strategies to Assure the Sustainability of Groundwater Resources

Conveners: Shemin Ge, Henning Prommer, Jin-Yong Lee, Heejung Kim

Global climate change and urbanization significantly affect water cycle systems and alter the use and management of groundwater resources that are essential for survival. Strategies are needed to secure ecologically and environmentally sound groundwater resources for the next generation against natural and artificial threats. Hydrologists interested in Topic 4 can now present ideas for the protection and sustainable use of groundwater resources

 

Groundwater Quality and Contamination

Conveners: Marco Petitta, Sung-Wook Jeen, Hyoun-Tae Hwang, Dong-Chan Koh

Maintaining good groundwater quality and preventing or managing non-point source contamination are essential requirements for sustainable development of communities and preservation of ecosystems. This topic focusses on groundwater quality and contamination associated with reactions with aquifer minerals, agricultural activities and nutrients, natural contaminants such as arsenic and fluoride, and emerging contaminants. The topic extends to drinking water protection and development and operation of remediation technologies to deal with contamination problems.

 

Groundwater and Surface Water: an Integrated View

Conveners: Okke Batelaan, Hans Jürgen Hahn, Il-Moon Chung, Yunjung Hyun, Etienne Bresciani

Practically all surface water (SW) features (streams, lakes, reservoirs, wetlands, and estuaries) interact with groundwater (GW). Surface water bodies gain water and solutes from groundwater systems and in other cases, surface water bodies recharge groundwater, while also causing changes in groundwater quality. The interfaces between GW and SW environments, such as hyporheic - benthic zones and riparian corridors often function as biogeochemical hotspots and can have important influences on whole-stream ecological functioning. In this respect, the process of (de)colmation needs further attention. In addition, groundwater-dependent ecosystems can be considered ecologically rich and highly valued interfaces between GW and SW. This session aims to stimulate the discussion between GW-SW researchers and to advance a more integrated scientifically based understanding. We also welcome contributions that discuss the management of connected GW-SW resources and its beneficial use in terms of water resources sustainability.

 

Advances in Karst and Fractured-rock Hydrogeology

Conveners: Nico Goldscheider, Young-Jin Park, Judit Mádl-Szőnyi, Sung-Hoon Ji

Fractured and karstified rock aquifers show different characteristics than porous media, related to the heterogeneity and scale-dependency of hydraulic conductivity. Therefore, the investigation and simulation of flow and contaminant transport in these aquifers represent particular challenges in hydrogeology. Groundwater from these aquifers is a major freshwater resource for human consumption and ecosystems. Furthermore, the specific structure and properties of these hard-rock aquifers also affect the performance and safety of artificial underground facilities. This topic aims to discuss the recent advances in understanding groundwater flow and contaminant transport in karst and fractured-rock aquifers.

 

Coastal Zone Management and Water Resources

Conveners: Yoseph Yechieli, Jimmy Jiao, Weon Shik Han, Kue-Young Kim

Coastal aquifers are a major water source for more than one billion people living in coastal regions, but are vulnerable to seawater intrusion. This topic aims to contribute to a greater understanding of the dynamic interactions between groundwater and seawater in coastal zone. Especially, sea-level rise due to the expected effects of climate change may negatively impact coastal aquifers. Subjects may include, but not limited to, geophysical and hydrochemical monitoring of seawater intrusion, analytical solutions, numerical modeling, laboratory experiments, field studies and management of groundwater resources in coastal area.

 

Groundwater and Energy

Conveners: Hikari Fujii, Ingo Dressel, Byoung-Woo Yum, Youngmin Lee

Groundwater links directly to the generation, consumption, and management of our energy. The Groundwater and Energy session consists of three sub-topics: geological disposal of nuclear wastes, geological storage of CO 2 , and low and high temperature geothermal energy. Geological disposal of nuclear wastes is focused on various topics related to survey for finding disposal sites, site characterization, engineering and geological barriers, performance assessment, natural analogues, laboratory and field test, and so on. Geological storage of CO 2 includes laboratory and field testing methods, analysis of field data, natural analogues of CO 2 storage, site characterization, monitoring of CO 2 storage sites, numerical modeling, and so on. For low and high temperature geothermal energy, presentations are invited to cover various aspects to geothermal energy related topics including geothermal resource assessment, low and high temperature geothermal energy applications such as heating and cooling system, hydrothermal and enhanced geothermal systems for power generation, numerical techniques, case studies, and so on. This session is not limited to only three topics above. Any presentations related to groundwater and energy applications will be welcomed.

 

Understanding the flow conditions and permeability distribution of deep carbonate systems with unconfined and confined segments are critical because these systems contain significant drinking and thermal water resources, moreover, hydrocarbon reservoirs and MVT deposits. These areas can be suitable for CO2 sequestration as well. Contrary to this great need the knowledge for these reservoirs is very limited due to their depth and consequent high drilling and exploration costs. This session intend to foster and mediate the scientific discussion about these carbonate systems regarding their flow characteristics, driving forces, water type, geological agency of flowing water and the practical application of this knowledge.