Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield

Toni Henri Kristian Veikkolainen; Ilmo Tapio Kukkonen; T. Tiira

Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield

Toni Henri Kristian Veikkolainen, Ilmo Tapio Kukkonen, T. Tiira

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific

Abstract

This study presents an analysis of seismic cutoff depth and heat flow field of the Fennoscandian Shield. Altogether 4190 earthquake events from years 2000-2015 in Finnish and Swedish national catalogues have been applied for this purpose. To model the heat flow field, 223 values from both countries and their neighbouring areas were used to find out if any correlation between the maximum earthquake focal depth (cutoff depth) and surface heat flow exists. Because heat flow and cutoff depth appear unrelated, it seems evident that regional variations of heat flow are caused by shallow lying variations (i.e., in upper crust) in heat production instead of deeper sources. Therefore one-dimensional layer models with temperature-dependent thermal conductivity are functional for the shield area.

Original language	English
Title of host publication	Lithosphere 2016 : Ninth Symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia Programme and Extended Abstracts
Editors	Ilmo Kukkonen ... [et al.]
Number of pages	4
Place of Publication	Helsinki
Publisher	Institute of Seismology, University of Helsinki
Publication date	2016
Pages	149-152
ISBN (Print)	978-952-10-5081-7
ISBN (Electronic)	978-952-10-9282-5
Publication status	Published - 2016
MoE publication type	B3 Article in conference proceedings
Event	Litosphere Symposium - Espoo, Finland Duration: 9 Nov 2016 → 11 Nov 2016 Conference number: 9

Publication series

Name	Report. S
Publisher	University of Helsinki, Institute of Seismology
Number	65
ISSN (Print)	0357-3060

Fields of Science

1171 Geosciences

Access to Document

http://www.seismo.helsinki.fi/pdf/Lito2016.pdf

FINES-PS17 Array
Kortström, J. (Manager), Lindblom, P. (Operator) & Keskinen, J. (Operator)
Institute of Seismology
Facility/equipment: Equipment
Institute of Seismology's Network of Seismic Stations
Tiira, T. (Manager), Keskinen, J. (Operator), Kortström, J. (Operator), Lindblom, P. (Operator), Seipäjärvi, P. J. (Operator) & Juntunen, A. K. (Operator)
Institute of Seismology
Facility/equipment: Equipment
Local Network in Kuusamo
Tiira, T. (Manager) & Lindblom, P. (Operator)
Institute of Seismology
Facility/equipment: Equipment

Cite this

Veikkolainen, T. H. K., Kukkonen, I. T., & Tiira, T. (2016). Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield. In I. Kukkonen ... [et al.] (Ed.), Lithosphere 2016 : Ninth Symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia Programme and Extended Abstracts (pp. 149-152). (Report. S; No. 65). Institute of Seismology, University of Helsinki. http://www.seismo.helsinki.fi/pdf/Lito2016.pdf

Veikkolainen, Toni Henri Kristian ; Kukkonen, Ilmo Tapio ; Tiira, T. / Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield. Lithosphere 2016 : Ninth Symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia Programme and Extended Abstracts. editor / Ilmo Kukkonen ... [et al.]. Helsinki : Institute of Seismology, University of Helsinki, 2016. pp. 149-152 (Report. S; 65).

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title = "Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield",

abstract = "This study presents an analysis of seismic cutoff depth and heat flow field of the Fennoscandian Shield. Altogether 4190 earthquake events from years 2000-2015 in Finnish and Swedish national catalogues have been applied for this purpose. To model the heat flow field, 223 values from both countries and their neighbouring areas were used to find out if any correlation between the maximum earthquake focal depth (cutoff depth) and surface heat flow exists. Because heat flow and cutoff depth appear unrelated, it seems evident that regional variations of heat flow are caused by shallow lying variations (i.e., in upper crust) in heat production instead of deeper sources. Therefore one-dimensional layer models with temperature-dependent thermal conductivity are functional for the shield area.",

keywords = "1171 Geosciences",

author = "Veikkolainen, {Toni Henri Kristian} and Kukkonen, {Ilmo Tapio} and T. Tiira",

year = "2016",

language = "English",

isbn = "978-952-10-5081-7",

series = "Report. S",

publisher = "Institute of Seismology, University of Helsinki",

number = "65",

pages = "149--152",

editor = "{Kukkonen ... [et al.]}, Ilmo",

booktitle = "Lithosphere 2016",

address = "Finland",

note = "Litosphere Symposium ; Conference date: 09-11-2016 Through 11-11-2016",

}

Veikkolainen, THK , Kukkonen, IT & Tiira, T 2016, Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield. in I Kukkonen ... [et al.] (ed.), Lithosphere 2016 : Ninth Symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia Programme and Extended Abstracts. Report. S, no. 65, Institute of Seismology, University of Helsinki, Helsinki, pp. 149-152, Litosphere Symposium, Espoo, Finland, 09/11/2016. <http://www.seismo.helsinki.fi/pdf/Lito2016.pdf>

Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield. / Veikkolainen, Toni Henri Kristian ; Kukkonen, Ilmo Tapio ; Tiira, T.
Lithosphere 2016 : Ninth Symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia Programme and Extended Abstracts. ed. / Ilmo Kukkonen ... [et al.]. Helsinki: Institute of Seismology, University of Helsinki, 2016. p. 149-152 (Report. S; No. 65).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific

TY - GEN

T1 - Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield

AU - Veikkolainen, Toni Henri Kristian

AU - Kukkonen, Ilmo Tapio

AU - Tiira, T.

N1 - Conference code: 9

PY - 2016

Y1 - 2016

N2 - This study presents an analysis of seismic cutoff depth and heat flow field of the Fennoscandian Shield. Altogether 4190 earthquake events from years 2000-2015 in Finnish and Swedish national catalogues have been applied for this purpose. To model the heat flow field, 223 values from both countries and their neighbouring areas were used to find out if any correlation between the maximum earthquake focal depth (cutoff depth) and surface heat flow exists. Because heat flow and cutoff depth appear unrelated, it seems evident that regional variations of heat flow are caused by shallow lying variations (i.e., in upper crust) in heat production instead of deeper sources. Therefore one-dimensional layer models with temperature-dependent thermal conductivity are functional for the shield area.

AB - This study presents an analysis of seismic cutoff depth and heat flow field of the Fennoscandian Shield. Altogether 4190 earthquake events from years 2000-2015 in Finnish and Swedish national catalogues have been applied for this purpose. To model the heat flow field, 223 values from both countries and their neighbouring areas were used to find out if any correlation between the maximum earthquake focal depth (cutoff depth) and surface heat flow exists. Because heat flow and cutoff depth appear unrelated, it seems evident that regional variations of heat flow are caused by shallow lying variations (i.e., in upper crust) in heat production instead of deeper sources. Therefore one-dimensional layer models with temperature-dependent thermal conductivity are functional for the shield area.

KW - 1171 Geosciences

M3 - Conference contribution

SN - 978-952-10-5081-7

T3 - Report. S

SP - 149

EP - 152

BT - Lithosphere 2016

A2 - Kukkonen ... [et al.], Ilmo

PB - Institute of Seismology, University of Helsinki

CY - Helsinki

T2 - Litosphere Symposium

Y2 - 9 November 2016 through 11 November 2016

ER -

Veikkolainen THK , Kukkonen IT , Tiira T. Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield. In Kukkonen ... [et al.] I, editor, Lithosphere 2016 : Ninth Symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia Programme and Extended Abstracts. Helsinki: Institute of Seismology, University of Helsinki. 2016. p. 149-152. (Report. S; 65).

Applying seismic cutoff depth in thermal modelling of the Fennoscandian Shield

Abstract

Publication series

Fields of Science

Access to Document

Equipment

FINES-PS17 Array

Institute of Seismology's Network of Seismic Stations

Local Network in Kuusamo

Cite this