ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Unknown

Hydrogeochemical changes before and after a major earthquake (2004)

Lillemor Claesson ; Alasdair Skelton ; Colin Graham ; [et al.]

In: Geology, London, Institution of Mining and Metallurgy, vol. 32, no. 8, pp. 641-644, pp. 1869, (ISBN: 0-12-018847-3)

add to mindlist on the mindlist

Details

Publication Date: 2004

Keywords: Fluids ; Earthquake ; Earthquake precursor: prediction research ; Earthquake precursor: chemical (Rn, water(-level,...) ; Moerth ; Morth

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

BIBLIOGRAPHY SEISMOLOGY

S·F·X

2

Electronic Resource

Sulfur isotope ratios of Icelandic rocks (1989)

Torssander, Peter

Springer

Contributions to mineralogy and petrology 102 (1989), S. 18-23

add to mindlist on the mindlist

Details

ISSN: 1432-0967

Source: Springer Online Journal Archives 1860-2000

Topics: Geosciences

Notes: Abstract Sulfur isotope ratios have been determined in 27 selected volcanic rocks from Iceland together with their whole rock chemistry. Theδ 34S of analyzed basalts ranges from −2.0‰ to +0.4‰ with an average value of −0.8‰ Tholeiitic and alkaline rocks exhibit little difference inδ 34S values but the intermediate and acid rocks analyzed have higherδ 34S values up to +4.2‰ It is suggested that the overall variation in sulfur isotope composition of the basalts is caused by degassing. The small range of theδ 34S values and its similarity to other oceanic and continental basalts, suggest that the depleted mantle is homogeneous in its sulfur isotope composition. Theδ 34S of the depleted mantle is estimated to be within the range for undegassed oceanic basalts, −0.5 to +1.0‰

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01160187

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

3

Electronic Resource

Sulfur isotope values in a forested catchment over four years: Evidence for oxidation and reduction processes (1999)

Mörth, Carol-Magnus ; Torssander, Peter ; Kusakabe, Minoru ; [et al.]

Springer

Biogeochemistry 44 (1999), S. 51-71

add to mindlist on the mindlist

Details

ISSN: 1573-515X

Keywords: adsorption ; bacterial dissimilatory sulfate reduction ; dry deposition ; forested catchment ; Lake Gårdsjön ; isotopes ; oxidation of sulfur ; sulfate ; sulfur ; Sweden

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Geosciences

Notes: Abstract A small catchment on the Swedish West Coast has been studied over four years to determine S dynamics by using S isotope ratios. A Norway spruce dominated forest covers the catchment, and small peat areas occur in the lower parts of the catchment. The runoff δ34SSO4 values varied both during the year, and from year to year. Over the period from February 1990 to December 1993, the δ34SSO4 values ranged from −1‰ to +11‰. Over the same period, the throughfall δ34SSO4 values ranged from +1‰ to +15‰. There was no correlation (r2 = 0.01; Pr(F) = 0.57) between δ34SSO4 values in throughfall and runoff. Since the only input of S to the catchment is atmospheric deposition, the long-term runoff S mass flux is controlled by the deposition. Therefore, processes in the catchment are responsible for the variation in the runoff δ34SSO4 values. During periods with 34SSO4 enriched runoff, bacterial dissimilatory SO42- reduction occurs in the catchment. After very dry periods, oxidation of this reduced S, which is 32S-enriched, can be traced in runoff. Previous studies of the catchment have not been able to distinguish between: 1) oxidation of reduced S and dry deposition, and 2) reduction and adsorption. From the current study, it can be concluded that adsorption and dry deposition cannot cause the observed variation in runoff δ34SSO4.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1006030008089

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

4

Electronic Resource

Sulfur isotope values in a forested catchment over four years: Evidence for oxidation and reduction processes (1999)

Mörth, Carl -Magnus ; Torssander, Peter ; Kusakabe, Minoru ; [et al.]

Springer

Biogeochemistry 44 (1999), S. 51-71

add to mindlist on the mindlist

Details

ISSN: 1573-515X

Keywords: adsorption ; bacterial dissimilatory sulfate reduction ; dry deposition ; forested catchment ; Lake Gårdsjön ; isotopes ; oxidation of sulfur ; sulfate ; sulfur ; Sweden

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Geosciences

Notes: Abstract A small catchment on the Swedish West Coast has been studied over four years to determine S dynamics by using S isotope ratios. A Norway spruce dominated forest covers the catchment, and small peat areas occur in the lower parts of the catchment. The runoff $$\delta ^{34} S_{SO_4 } $$ values varied both during the year, and from year to year. Over the period from February 1990 to December 1993, the $$\delta ^{34} S_{SO_4 } $$ values ranged from — 1%. to +11%. Over the same period, the throughfall $$\delta ^{34} S_{SO_4 } $$ values ranged from +1%. to +15%. There was no correlation (r 2= 0.01; Pr(F)=0.57) between $$\delta ^{34} S_{SO_4 } $$ values in throughfall and runoff. Since the only input of S to the catchment is atmospheric deposition, the long-term runoff S mass flux is controlled by the deposition. Therefore, processes in the catchment are responsible for the variation in the runoff $$\delta ^{34} S_{SO_4 } $$ values. During periods with $$\delta ^{34} S_{SO_4 } $$ enriched runoff, bacterial dissimilatory SO 4 2− reduction occurs in the catchment. After very dry periods, oxidation of this reduced S, which is32S-enriched, can be traced in runoff. Previous studies of the catchment have not been able to distinguish between: 1) oxidation of reduced S and dry deposition, and 2) reduction and adsorption. From the current study, it can be concluded that adsorption and dry deposition cannot cause the observed variation in runoff $$\delta ^{34} S_{SO_4 } $$ .

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00992998

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

5

Electronic Resource

Sulphur isotope ratios in sulphate and oxygen isotopes in water from a small watershed in Central Sweden (1992)

Andersson, Per ; Torssander, Peter ; Ingri, Johan

Springer

Hydrobiologia 235-236 (1992), S. 205-217

add to mindlist on the mindlist

Details

ISSN: 1573-5117

Keywords: Sulphur isotopes ; oxygen isotopes ; precipitation ; streamwater ; lakewater ; sulphate reduction

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract During 1988–89 water samples for sulphur and oxygen isotope measurements were collected in the Lake Mjösjön watershed (7.3 km2), central Sweden. Samples included: precipitation, throughfall, lakewater, shallow groundwater and inlet and outlet streams. The δ34S of sulphate in precipitation ranged from + 6.41‰ in winter to + 3.88‰ in summer, the higher winter values attributed to seasonal differences in the kinetic and equilibrium isotope fractionation during oxidation of atmospheric sulphur dioxide to sulphate. The δ34S in rain samples and in pine and spruce throughfall were similar, indicating no gain of sulphur from the trees. In the inflowing stream, the δ34S value increased as discharge decreased, from + 5.57‰ in spring to + 26.21‰ in summer, indicating bacterial sulphate reduction. The fluctuations in the inlet water were damped by the lake and in the outlet water, only a small decrease in the δ34S value during spring discharge was observed. During winter 1988–89, the near surface waters in the lake showed the same δ34S as snow indicating that meltwater governs the isotopic composition. During the winter, the δ34S in the near bottom waters increased while oxygen decreased due to bacterial sulphate reduction in the sediments. This also caused an increase in the alkalinity in the near bottom waters. Based on the δ18O data the water within the watershed is derived largely from meteoric water. During spring discharge, meltwater governs the inflow and outflow stream while additional groundwater influences occurred during the drier period. Most sulphur is derived from atmospheric deposition and the δ34S in sulphate increased during passage through the watershed due to bacterial sulphate reduction.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00026213

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

6

Electronic Resource

Historical atmospheric deposition in a Swedish mining area traced by S isotope ratios in soils (1999)

Carlsson, Elin ; Torssander, Peter ; Mörth, Carl-Magnus ; [et al.]

Springer

Water, air & soil pollution 110 (1999), S. 103-118

add to mindlist on the mindlist

Details

ISSN: 1573-2932

Keywords: atmospheric deposition ; mining area ; SO2 emission ; soil ; sulfur isotopes ; Sweden

Source: Springer Online Journal Archives 1860-2000

Topics: Energy, Environment Protection, Nuclear Power Engineering

Notes: Abstract Mining activities for almost thousand years have caused large S emissions in the Falun area, central Sweden. Since the beginning of the 20th century, the S deposition has decreased considerably. The soil S concentrations and S isotope compositions were analyzed for ΣS and adsorbed SO42- for three soil profiles close to the mining area in order to identify the soil S sources. The δ34S values were found to be different for ΣS and adsorbed SO42- and ranged from –3.7‰ to +2.6‰. In the B-horizon, the observed ΣS δ34S values (and hence calculated δ34S values for organic S) were mostly lower than those of the adsorbed SO42-. In the O-horizon, ΣS showed similar δ34S values as the adsorbed SO42- in the mineral soil. The adsorbed SO42- showed nearly constant δ34S values with depth. The δ34S values in the soils are interpreted to reflect a mixture of historical and modern deposition due to soil S circulation with no or negligible fractionation. The lower δ34S values of organic S in the B-horizon suggests preservation of acid deposition originating from mining activities back in time. The adsorbed SO42- in the mineral soil and the organic S in the O-horizon reflect a response to a new δ34S composition in the atmosphere due to fossil fuel burning during the 20th century.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1005007821230

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

7

Electronic Resource

Sulfur and oxygen isotope ratios in sulfate during an acidification reversal study at Lake Gårdsjön, Western Sweden (1995)

Mörth, Carl -Magnus ; Torssander, Peter

Springer

Water, air & soil pollution 79 (1995), S. 261-278

add to mindlist on the mindlist

Details

ISSN: 1573-2932

Source: Springer Online Journal Archives 1860-2000

Topics: Energy, Environment Protection, Nuclear Power Engineering

Notes: Abstract The reversibility of acidification is being investigated in a full scale catchment manipulation experiment at Lake Gårdsjön on the Swedish west coast using isotopes as environmental tracers. A 6300 m2 roof over the catchment enables researchers to control depositional variables. Stable S isotope values were determined in bulk deposition, throughfall, runoff, groundwater and soil-extracted water during one year prior to and two years of experimental control. Data collected prior to experimental control suggest that the inorganic SO 4 2− pool within the catchment has a homogeneousδ 34S value of about+5.5‰. Sprinkling of water spiked with small amounts of sea-water derived SO 4 2− started in April 1991. Theδ 34S value of this SO 4 2− is around+19.5‰. Since April 1991, the SO 4 2− concentration in runoff has decreased by some 30%, however, theδ 34S value have increased by only 0.5‰. This suggests mixing of sprinkling water S with a large reservoir of S in the catchment. Oxygen isotopes in SO 4 2− suggest that less than one third of the SO 4 2− in runoff is secondary SO 4 2− formed within the soil profile. This is, however, no evidence for net mineralization of S. The SO 4 2− in runoff in the roofed catchment is a mixture of SO 4 2− previously adsorbed in the soil, mineralized organic S and SO 4 2− from the sprinkler water. Calculations based on isotope data indicate that the turnover time of S within the catchment is on the order of decades. Since SO 4 2− facilitates base cation flow, the acidification reversal will take a much longer time than concentration decreases of SO 4 2− would suggest.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01100441

Permalink