Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE

Jaakko Mäkinen; Tero Hokkanen; Heikki Virtanen; Arttu Raja-Halli; Risto P. Mäkinen

doi:10.1007/978-3-319-10837-7_35

Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE

Jaakko Mäkinen^*, Tero Hokkanen, Heikki Virtanen, Arttu Raja-Halli, Risto P. Mäkinen

^*Corresponding author for this work

Department of Civil Engineering

Finnish Geodetic Institute

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

4 Citations (Scopus)

Abstract

We construct a model for the influence of variation in local water storage on the observations of the superconducting gravimeter (SG) T020 in Metsähovi, Finland. The following hydrological components are accounted for: (1) soilmoisture and groundwater in sediments, (2) groundwater in the fractures of the crystalline bedrock, (3) snow on the ground, and (4) snow on the laboratory roof. We show that due to the geometry of the local storage, its gravity influence at the SG is only a fraction of the influence of the corresponding Bouguer sheet, and discuss the implications for comparing the SG with variation in gravity observed with GRACE. We compare the SG residuals with the variation in gravity predicted from the local model and two models of continental water storage. The general patterns are similar but there are differences in amplitude and phase. Further research is outlined.

Original language	English
Title of host publication	Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings
Publisher	Springer
Pages	275-281
Number of pages	7
Volume	141
ISBN (Electronic)	9783319108360
DOIs	https://doi.org/10.1007/978-3-319-10837-7_35
Publication status	Published - 2014
MoE publication type	A4 Conference publication
Event	International Association of Geodesy Symposia: Gravity, Geoid and Height Systems - Venice, Italy Duration: 9 Oct 2012 → 12 Oct 2012

Conference

Conference	International Association of Geodesy Symposia
Abbreviated title	GGHS
Country/Territory	Italy
City	Venice
Period	09/10/2012 → 12/10/2012

Keywords

Continental water storage
GRACE
Groundwater
Hydrology
Snow
Soil moisture
Superconducting gravimeter

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10.1007/978-3-319-10837-7_35

Cite this

Mäkinen, J., Hokkanen, T., Virtanen, H., Raja-Halli, A., & Mäkinen, R. P. (2014). Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE. In Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings (Vol. 141, pp. 275-281). Springer. https://doi.org/10.1007/978-3-319-10837-7_35

@inproceedings{016e00eae0344c4a9288614dd98e8355,

title = "Local hydrological effects on gravity at Mets{\"a}hovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE",

abstract = "We construct a model for the influence of variation in local water storage on the observations of the superconducting gravimeter (SG) T020 in Mets{\"a}hovi, Finland. The following hydrological components are accounted for: (1) soilmoisture and groundwater in sediments, (2) groundwater in the fractures of the crystalline bedrock, (3) snow on the ground, and (4) snow on the laboratory roof. We show that due to the geometry of the local storage, its gravity influence at the SG is only a fraction of the influence of the corresponding Bouguer sheet, and discuss the implications for comparing the SG with variation in gravity observed with GRACE. We compare the SG residuals with the variation in gravity predicted from the local model and two models of continental water storage. The general patterns are similar but there are differences in amplitude and phase. Further research is outlined.",

keywords = "Continental water storage, GRACE, Groundwater, Hydrology, Snow, Soil moisture, Superconducting gravimeter",

author = "Jaakko M{\"a}kinen and Tero Hokkanen and Heikki Virtanen and Arttu Raja-Halli and M{\"a}kinen, {Risto P.}",

year = "2014",

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volume = "141",

pages = "275--281",

booktitle = "Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings",

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Mäkinen, J, Hokkanen, T, Virtanen, H, Raja-Halli, A & Mäkinen, RP 2014, Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE. in Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings. vol. 141, Springer, pp. 275-281, International Association of Geodesy Symposia, Venice, Italy, 09/10/2012. https://doi.org/10.1007/978-3-319-10837-7_35

Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE. / Mäkinen, Jaakko; Hokkanen, Tero; Virtanen, Heikki et al.
Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings. Vol. 141 Springer, 2014. p. 275-281.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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T1 - Local hydrological effects on gravity at Metsähovi, Finland

T2 - International Association of Geodesy Symposia

AU - Mäkinen, Jaakko

AU - Hokkanen, Tero

AU - Virtanen, Heikki

AU - Raja-Halli, Arttu

AU - Mäkinen, Risto P.

PY - 2014

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N2 - We construct a model for the influence of variation in local water storage on the observations of the superconducting gravimeter (SG) T020 in Metsähovi, Finland. The following hydrological components are accounted for: (1) soilmoisture and groundwater in sediments, (2) groundwater in the fractures of the crystalline bedrock, (3) snow on the ground, and (4) snow on the laboratory roof. We show that due to the geometry of the local storage, its gravity influence at the SG is only a fraction of the influence of the corresponding Bouguer sheet, and discuss the implications for comparing the SG with variation in gravity observed with GRACE. We compare the SG residuals with the variation in gravity predicted from the local model and two models of continental water storage. The general patterns are similar but there are differences in amplitude and phase. Further research is outlined.

AB - We construct a model for the influence of variation in local water storage on the observations of the superconducting gravimeter (SG) T020 in Metsähovi, Finland. The following hydrological components are accounted for: (1) soilmoisture and groundwater in sediments, (2) groundwater in the fractures of the crystalline bedrock, (3) snow on the ground, and (4) snow on the laboratory roof. We show that due to the geometry of the local storage, its gravity influence at the SG is only a fraction of the influence of the corresponding Bouguer sheet, and discuss the implications for comparing the SG with variation in gravity observed with GRACE. We compare the SG residuals with the variation in gravity predicted from the local model and two models of continental water storage. The general patterns are similar but there are differences in amplitude and phase. Further research is outlined.

KW - Continental water storage

KW - GRACE

KW - Groundwater

KW - Hydrology

KW - Snow

KW - Soil moisture

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BT - Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings

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Mäkinen J, Hokkanen T, Virtanen H, Raja-Halli A, Mäkinen RP. Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE. In Gravity, Geoid and Height Systems - IAG Symposium GGHS2012, Proceedings. Vol. 141. Springer. 2014. p. 275-281 doi: 10.1007/978-3-319-10837-7_35

Local hydrological effects on gravity at Metsähovi, Finland: Implications for comparing observations by the superconducting gravimeter with global hydrological models and with GRACE

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Keywords

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