Recovery of groundwater in the Sanriku region contaminated by the tsunami inundation from the 2011 Tohoku earthquake
Kaihotsu, Ichirow ; Onodera, Shin ichi ; Shimada, Jun and Nakagawa, Kei LU
(2017)
In Environmental Earth Sciences
76(6).
- Abstract
Many wells in the Sanriku region used as sources for water supply systems were heavily contaminated by the tsunami of the 2011 great Tohoku earthquake on March 11 in 2011. To better understand the nature of the groundwater contamination by the tsunami inundation and to clarify the recovery process of contaminated groundwater at the study wells, groundwater monitoring has been conducted once or twice yearly since early summer in 2011. High and abnormal values of electric conductivity (EC), chloride ion concentration (CIC), Na+, Ca+, heavy metal ions, and heavier isotopes of the contaminated groundwater were also obtained in April and June 2011. The chemical elements have rapidly and exponentially decreased as a... (More)
Many wells in the Sanriku region used as sources for water supply systems were heavily contaminated by the tsunami of the 2011 great Tohoku earthquake on March 11 in 2011. To better understand the nature of the groundwater contamination by the tsunami inundation and to clarify the recovery process of contaminated groundwater at the study wells, groundwater monitoring has been conducted once or twice yearly since early summer in 2011. High and abnormal values of electric conductivity (EC), chloride ion concentration (CIC), Na+, Ca+, heavy metal ions, and heavier isotopes of the contaminated groundwater were also obtained in April and June 2011. The chemical elements have rapidly and exponentially decreased as a result of effective pumping of the contaminated groundwater from the study wells and because of abundant rainfall in 2011. In April 2015 (about 4 years after the tsunami inundation), the CIC and EC of the contaminated groundwater of two study wells in Minamisanriku town had reached pre-inundation values. The estimated residence times of groundwater of the two study wells were 105–118 days in the full-day pumping stage and 910–1000 days in the daytime-only pumping stage.
(Less)
- author
- Kaihotsu, Ichirow
; Onodera, Shin ichi
; Shimada, Jun
and Nakagawa, Kei
LU
- publishing date
- 2017-03-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- CIC, Groundwater contamination, Isotope, Tohoku, Tsunami
- in
- Environmental Earth Sciences
- volume
- 76
- issue
- 6
- article number
- 250
- publisher
- Springer
- external identifiers
-
- scopus:85015918456
- ISSN
- 1866-6280
- DOI
- 10.1007/s12665-017-6569-x
- language
- English
- LU publication?
- no
- id
- 93e8ee7f-fd54-4839-81f2-79e23c428c9c
- date added to LUP
- 2019-01-02 01:27:44
- date last changed
- 2022-04-25 20:12:17
@article{93e8ee7f-fd54-4839-81f2-79e23c428c9c,
abstract = {{<p>Many wells in the Sanriku region used as sources for water supply systems were heavily contaminated by the tsunami of the 2011 great Tohoku earthquake on March 11 in 2011. To better understand the nature of the groundwater contamination by the tsunami inundation and to clarify the recovery process of contaminated groundwater at the study wells, groundwater monitoring has been conducted once or twice yearly since early summer in 2011. High and abnormal values of electric conductivity (EC), chloride ion concentration (CIC), Na<sup>+</sup>, Ca<sup>+</sup>, heavy metal ions, and heavier isotopes of the contaminated groundwater were also obtained in April and June 2011. The chemical elements have rapidly and exponentially decreased as a result of effective pumping of the contaminated groundwater from the study wells and because of abundant rainfall in 2011. In April 2015 (about 4 years after the tsunami inundation), the CIC and EC of the contaminated groundwater of two study wells in Minamisanriku town had reached pre-inundation values. The estimated residence times of groundwater of the two study wells were 105–118 days in the full-day pumping stage and 910–1000 days in the daytime-only pumping stage.</p>}},
author = {{Kaihotsu, Ichirow and Onodera, Shin ichi and Shimada, Jun and Nakagawa, Kei}},
issn = {{1866-6280}},
keywords = {{CIC; Groundwater contamination; Isotope; Tohoku; Tsunami}},
language = {{eng}},
month = {{03}},
number = {{6}},
publisher = {{Springer}},
series = {{Environmental Earth Sciences}},
title = {{Recovery of groundwater in the Sanriku region contaminated by the tsunami inundation from the 2011 Tohoku earthquake}},
url = {{http://dx.doi.org/10.1007/s12665-017-6569-x}},
doi = {{10.1007/s12665-017-6569-x}},
volume = {{76}},
year = {{2017}},
}