Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging.

Lancaster University

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https://doi.org/10.1046/j.1365-2478.2002.00338.x
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Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging. / Mohamed, Adel K.; Meju, Max A.; Fontes, Sergio L.
In: Geophysical Prospecting, Vol. 50, No. 6, 11.2002, p. 589-602.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Mohamed, AK, Meju, MA & Fontes, SL 2002, 'Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging.', Geophysical Prospecting, vol. 50, no. 6, pp. 589-602. https://doi.org/10.1046/j.1365-2478.2002.00338.x

APA

Mohamed, A. K., Meju, M. A., & Fontes, S. L. (2002). Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging. Geophysical Prospecting, 50(6), 589-602. https://doi.org/10.1046/j.1365-2478.2002.00338.x

Vancouver

Mohamed AK, Meju MA, Fontes SL. Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging. Geophysical Prospecting. 2002 Nov;50(6):589-602. doi: 10.1046/j.1365-2478.2002.00338.x

Author

Mohamed, Adel K. ; Meju, Max A. ; Fontes, Sergio L. / Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging. In: Geophysical Prospecting. 2002 ; Vol. 50, No. 6. pp. 589-602.

Bibtex

@article{1cc6de35c15047eabc7071e5ee04c796,

title = "Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging.",

abstract = "The magnetotelluric (MT) method has been applied to the determination of the deep resistivity structure of the northeastern margin of the Parnaiba Basin. Transient electromagnetic (TEM) and MT data were collected in early 1999 along a 95 km long N–S line, extending from the coast across the projected subcrop position of a discontinuous fault found to the west of the study area that is believed to be a possible basin-bounding fault. The MT data were processed to yield the TE- and TM-mode responses and then corrected for static shift using central-loop and single-loop TEM data, respectively. Regularized 2D MT inversion was subsequently undertaken using a structured initial model with the near-surface constrained by TEM inversion results. As a consistency check, we performed another set of 2D inversions using different smooth initial models. The various optimal 2D inversion models show clearly the presence of a major basement trough, over 2 km deep, located about 70 km from the coast. We interpret it as possibly marking the main basin margin and suggest that it may have implications for groundwater resource development in the area.",

author = "Mohamed, {Adel K.} and Meju, {Max A.} and Fontes, {Sergio L.}",

year = "2002",

month = nov,

doi = "10.1046/j.1365-2478.2002.00338.x",

language = "English",

volume = "50",

pages = "589--602",

journal = "Geophysical Prospecting",

issn = "0016-8025",

publisher = "Wiley-Blackwell",

number = "6",

}

RIS

TY - JOUR

T1 - Deep structure of the north-eastern margin of Parnaiba basin, Brazil, from magnetotelluric imaging.

AU - Mohamed, Adel K.

AU - Meju, Max A.

AU - Fontes, Sergio L.

PY - 2002/11

Y1 - 2002/11

N2 - The magnetotelluric (MT) method has been applied to the determination of the deep resistivity structure of the northeastern margin of the Parnaiba Basin. Transient electromagnetic (TEM) and MT data were collected in early 1999 along a 95 km long N–S line, extending from the coast across the projected subcrop position of a discontinuous fault found to the west of the study area that is believed to be a possible basin-bounding fault. The MT data were processed to yield the TE- and TM-mode responses and then corrected for static shift using central-loop and single-loop TEM data, respectively. Regularized 2D MT inversion was subsequently undertaken using a structured initial model with the near-surface constrained by TEM inversion results. As a consistency check, we performed another set of 2D inversions using different smooth initial models. The various optimal 2D inversion models show clearly the presence of a major basement trough, over 2 km deep, located about 70 km from the coast. We interpret it as possibly marking the main basin margin and suggest that it may have implications for groundwater resource development in the area.

AB - The magnetotelluric (MT) method has been applied to the determination of the deep resistivity structure of the northeastern margin of the Parnaiba Basin. Transient electromagnetic (TEM) and MT data were collected in early 1999 along a 95 km long N–S line, extending from the coast across the projected subcrop position of a discontinuous fault found to the west of the study area that is believed to be a possible basin-bounding fault. The MT data were processed to yield the TE- and TM-mode responses and then corrected for static shift using central-loop and single-loop TEM data, respectively. Regularized 2D MT inversion was subsequently undertaken using a structured initial model with the near-surface constrained by TEM inversion results. As a consistency check, we performed another set of 2D inversions using different smooth initial models. The various optimal 2D inversion models show clearly the presence of a major basement trough, over 2 km deep, located about 70 km from the coast. We interpret it as possibly marking the main basin margin and suggest that it may have implications for groundwater resource development in the area.

U2 - 10.1046/j.1365-2478.2002.00338.x

DO - 10.1046/j.1365-2478.2002.00338.x

M3 - Journal article

VL - 50

SP - 589

EP - 602

JO - Geophysical Prospecting

JF - Geophysical Prospecting

SN - 0016-8025

IS - 6

ER -

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