The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake
Fly-ash particles comprising spheroidal carbonaceous particles (SCP) and inorganic ash spheres (IAS), produced from industrial fossil-fuel combustion, are found in lake sediments throughout the world where they provide an historical record of atmospheric pollutant deposition. These particles have be...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:132914 2023-05-15T13:55:06+02:00 The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake Nagafuchi, O Rose, NL Hoshika, A Satake, K 2009-10 http://discovery.ucl.ac.uk/132914/ unknown SPRINGER J PALEOLIMNOL , 42 (3) 359 - 371. (2009) Spheroidal carbonaceous particles Inorganic ash spheres Fly-ash Fossil-fuel combustion East Asia Pollution history POLYCYCLIC AROMATIC-HYDROCARBONS UNITED-KINGDOM NORTH-ATLANTIC ANTARCTIC ICE SEDIMENT MICROSPHERULES COMBUSTION POLLUTANTS SPHERULES Article 2009 ftucl 2017-03-09T23:10:55Z Fly-ash particles comprising spheroidal carbonaceous particles (SCP) and inorganic ash spheres (IAS), produced from industrial fossil-fuel combustion, are found in lake sediments throughout the world where they provide an historical record of atmospheric pollutant deposition. These particles have been widely used to assess the temporal and spatial distribution of industrial atmospheric pollution in both freshwater and terrestrial environments in Europe and the USA. However, there have been very few palaeolimnological fly-ash studies undertaken in Japan and none in Japanese mountain lakes. Here, we present the historical SCP and IAS records from a radiometrically dated sediment core taken from Lake Akagi-konuma (36A degrees 31' 54aEuro(3)N, 139A degrees 11' 32aEuro(3)E; elevation 1,470 m) located 100 km north-west of Tokyo. Meteorological data and back trajectory analyses confirm potential sources both within Japan and further afield in China and South Korea. SCP contamination began in the 1950s and increased rapidly to a peak in the mid-1980s. It is thought this represents contamination of Japanese origin, principally oil-fired power stations within 150 km of the lake. The profile of IAS, almost solely coal-derived, shows a rapid increase in the 1970s, in contrast to the record of coal consumption in Japan. The IAS record is therefore thought to reflect long-range transport from coal combustion sources in eastern China which started to expand in the 1970s. This raises concerns over the potential impact on Japanese mountain areas from recent rapid increases in, and predicted acceleration of, emissions from this industrial process. The scale of SCP contamination recorded in Lake Akagi-konuma is equivalent to moderately impacted mountain lakes in Europe, but is at the upper end of the range for remote lakes in the western United States. Article in Journal/Newspaper Antarc* Antarctic North Atlantic University College London: UCL Discovery Antarctic |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
Spheroidal carbonaceous particles Inorganic ash spheres Fly-ash Fossil-fuel combustion East Asia Pollution history POLYCYCLIC AROMATIC-HYDROCARBONS UNITED-KINGDOM NORTH-ATLANTIC ANTARCTIC ICE SEDIMENT MICROSPHERULES COMBUSTION POLLUTANTS SPHERULES |
spellingShingle |
Spheroidal carbonaceous particles Inorganic ash spheres Fly-ash Fossil-fuel combustion East Asia Pollution history POLYCYCLIC AROMATIC-HYDROCARBONS UNITED-KINGDOM NORTH-ATLANTIC ANTARCTIC ICE SEDIMENT MICROSPHERULES COMBUSTION POLLUTANTS SPHERULES Nagafuchi, O Rose, NL Hoshika, A Satake, K The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake |
topic_facet |
Spheroidal carbonaceous particles Inorganic ash spheres Fly-ash Fossil-fuel combustion East Asia Pollution history POLYCYCLIC AROMATIC-HYDROCARBONS UNITED-KINGDOM NORTH-ATLANTIC ANTARCTIC ICE SEDIMENT MICROSPHERULES COMBUSTION POLLUTANTS SPHERULES |
description |
Fly-ash particles comprising spheroidal carbonaceous particles (SCP) and inorganic ash spheres (IAS), produced from industrial fossil-fuel combustion, are found in lake sediments throughout the world where they provide an historical record of atmospheric pollutant deposition. These particles have been widely used to assess the temporal and spatial distribution of industrial atmospheric pollution in both freshwater and terrestrial environments in Europe and the USA. However, there have been very few palaeolimnological fly-ash studies undertaken in Japan and none in Japanese mountain lakes. Here, we present the historical SCP and IAS records from a radiometrically dated sediment core taken from Lake Akagi-konuma (36A degrees 31' 54aEuro(3)N, 139A degrees 11' 32aEuro(3)E; elevation 1,470 m) located 100 km north-west of Tokyo. Meteorological data and back trajectory analyses confirm potential sources both within Japan and further afield in China and South Korea. SCP contamination began in the 1950s and increased rapidly to a peak in the mid-1980s. It is thought this represents contamination of Japanese origin, principally oil-fired power stations within 150 km of the lake. The profile of IAS, almost solely coal-derived, shows a rapid increase in the 1970s, in contrast to the record of coal consumption in Japan. The IAS record is therefore thought to reflect long-range transport from coal combustion sources in eastern China which started to expand in the 1970s. This raises concerns over the potential impact on Japanese mountain areas from recent rapid increases in, and predicted acceleration of, emissions from this industrial process. The scale of SCP contamination recorded in Lake Akagi-konuma is equivalent to moderately impacted mountain lakes in Europe, but is at the upper end of the range for remote lakes in the western United States. |
format |
Article in Journal/Newspaper |
author |
Nagafuchi, O Rose, NL Hoshika, A Satake, K |
author_facet |
Nagafuchi, O Rose, NL Hoshika, A Satake, K |
author_sort |
Nagafuchi, O |
title |
The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake |
title_short |
The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake |
title_full |
The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake |
title_fullStr |
The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake |
title_full_unstemmed |
The temporal record and sources of atmospherically deposited fly-ash particles in Lake Akagi-konuma, a Japanese mountain lake |
title_sort |
temporal record and sources of atmospherically deposited fly-ash particles in lake akagi-konuma, a japanese mountain lake |
publisher |
SPRINGER |
publishDate |
2009 |
url |
http://discovery.ucl.ac.uk/132914/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_source |
J PALEOLIMNOL , 42 (3) 359 - 371. (2009) |
_version_ |
1766261341723557888 |