| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3P2FN85 | |||
| Repository | sid.inpe.br/mtc-m21b/2017/05.31.17.56 (restricted access) | |||
| Last Update | 2017:05.31.17.56.44 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2017/05.31.17.56.44 | |||
| Metadata Last Update | 2021:02.06.22.03.49 (UTC) administrator | |||
| DOI | 10.1186/s40623-017-0644-0 | |||
| ISSN | 1343-8832 | |||
| Citation Key | PadilhaAlveSilvEspi:2017:EfHuCr | |||
| Title | Effect of a huge crustal conductivity anomaly on the H-component of geomagnetic variations recorded in central South America  | |||
| Year | 2017 | |||
| Month | Dec. | |||
| Access Date | 2024, May 18 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 1240 KiB | |||
| 2. Context | ||||
| Author | 1 Padilha, Antonio Lopes 2 Alves, Livia Ribeiro 3 Silva, Graziela Belmira Dias da 4 Espinosa Sarmiento, Karen Viviana | |||
| Resume Identifier | 1 8JMKD3MGP5W/3C9JGJG | |||
| Group | 1 2 3 GES-CEA-SESPG-INPE-MCTIC-GOV-BR 4 GES-CEA-SESPG-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 antonio.padilha@inpe.br 2 livia.alves@inpe.br 3 graziela.silva@inpe.br 4 karen.sarmiento@inpe.br | |||
| Journal | Earth, Planets and Space | |||
| Volume | 69 | |||
| Number | 1 | |||
| Secondary Mark | B1_GEOCIÊNCIAS B1_ENGENHARIAS_I B1_ANTROPOLOGIA_/_ARQUEOLOGIA B4_SOCIOLOGIA B4_ASTRONOMIA_/_FÍSICA | |||
| History (UTC) | 2017-05-31 17:57:06 :: simone -> administrator :: 2017 2017-06-29 16:43:50 :: administrator -> simone :: 2017 2017-06-29 16:45:20 :: simone -> administrator :: 2017 2017-08-10 17:16:33 :: administrator -> simone :: 2017 2017-08-10 17:16:41 :: simone -> administrator :: 2017 2021-02-06 22:03:49 :: administrator -> simone :: 2017 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | Crustal conductor Geomagnetic observatory Geomagnetic variations Reflection of electromagnetic waves Skin effect South America | |||
| Abstract | We describe here an analysis of the H-component of the geomagnetic field recorded in several temporary stations operating simultaneously in the central-eastern region of Brazil during nighttime pulsation events in 1994 and the sudden commencement of the St. Patrick's Day magnetic storm in 2015. A significant amplification in the amplitude of the geomagnetic variations is consistently observed in one of these stations. Magnetovariational analysis indicates that the amplification factor is period dependent with maximum amplitude around 100 s. Integrated magnetotelluric (MT) and geomagnetic depth soundings (GDS) have shown that this station is positioned just over a huge 1200-km-long crustal conductor (estimated bulk conductivity greater than 1 S/m). We propose that the anomalous signature of the geomagnetic field at this station is due to the high reflection coefficient of the incident electromagnetic wave at the interface with the very good conductor and by skin effects damping the electromagnetic wave in the conducting layers overlying the conductor. There are some indication from the GDS data that the conductor extends southward beneath the sediments of the Pantanal Basin. In this region is being planned the installation of a new geomagnetic observatory, but its preliminary data suggest anomalous geomagnetic variations. We understand that a detailed MT survey must be carried out around the chosen observatory site to evaluate the possible influence of induced currents on the local geomagnetic field. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > Effect of a huge... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | padilha_effect.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | denypublisher denyfinaldraft | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/3F2PBEE | |||
| Citing Item List | sid.inpe.br/bibdigital/2013/10.12.21.02 2 sid.inpe.br/mtc-m21/2012/07.13.14.40.26 2 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid pages parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||