Reconstruction of geomagnetic activity and near-Earth interplanetary conditions over the past 167 yr - Part 3: improved representation of solar cycle 11

Svalgaard (2014) has recently pointed out that the calibration of the Helsinki magnetic observatory’s H component variometer was probably in error in published data for the years 1866–1874.5 and that this makes the interdiurnal variation index based on daily means, IDV(1d), (Lockwood et al., 2013a), and the interplanetary magnetic field strength derived from it (Lockwood et al., 2013b), too low around the peak of solar cycle 11. We use data from the modern Nurmijarvi station, relatively close to the site of the original Helsinki Observatory, to confirm a 30% underestimation in this interval and hence our results are fully consistent with the correction derived by Svalgaard. We show that the best method for recalibration uses the Helsinki Ak(H) and aa indices and is accurate to ±10 %. This makes it preferable to recalibration using either the sunspot number or the diurnal range of geomagnetic activity which we find to be accurate to ±20 %. In the case of Helsinki data during cycle 11, the two recalibration methods produce very similar corrections which are here confirmed using newly digitised data from the nearby St Petersburg observatory and also using declination data from Helsinki. However, we show that the IDV index is, compared to later years, too similar to sunspot number before 1872, revealing independence of the two data series has been lost; either because the geomagnetic data used to compile IDV has been corrected using sunspot numbers, or vice versa, or both. We present corrected data sequences for both the IDV(1d) index and the reconstructed IMF (interplanetary magnetic field).We also analyse the relationship between the derived near-Earth IMF and the sunspot number and point out the relevance of the prior history of solar activity, in addition to the contemporaneous value, to estimating any “floor” value of the near-Earth interplanetary field.

Geotecnologias na delimitação de áreas prioritárias à recomposição florestal na sub-bacia do Ribeirão Lavapés, Botucatu-SP

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

The Probe, Issue 167 – July 1996

Techniques and Expertise in Wildlife Damage Control: A Survey Among NADCA's Membership, by Dallas R. Virchow, University of Nebraska, and J. Russell Mason, Utah State University NADCA Membership Survey Rats' Rights Repealed in New Jersey Texas Predators Dine on Exotics Recipes for Nutria Wildlife Damage to Aircraft Tallied Airplane Hits Deer Golfers Get Teed Off at Coots Japanese Technologist Tackles Rodents ADC To Tackle Gophers Booklet Review: Missouri's Beaver: A Guide to Management, Nuisance Prevention, and Damage Control by Ron McNeely. Conservation Commission of the State of Missouri, 1995. Elk Reintroduction and Meningeal Worms South African Puppy, "Licky," Barely Survives Eagle Attack Publications Available: The Proceedings of the 12th Great Plains Wildlife Damage Control Workshop (1995); The proceedings for a conference, "Private Property Rights and Responsibilities of Rangeland Owners and Managers"; Proceedings, 6th Eastern Wildlife Damage Management Conference (1993); Rangeland Wildlife (1996), edited by Paul R. Krausman, and published by the Society for Range Management New "Animal Talk" Radio Program in Los Angeles, CA — Animal Issues Today NWRC Announces Bird Research Leader Sick Boy Who Wishes for Dream Hunt Incites Wrath of Animal Rightists A Picture Speaks A Thousand Words: From the WDAMAGE listserv: by Fred Lyass (pseudonym used by request)

Ms. hebr. oct. 167 - Ḥeshbon ha-luḥot

Vorbesitzer: Abraham Merzbacher

Kundmachung: Zu Folge des hohen Ministerial-Erlasses vom 17. Juni 1848, Z. 1119-167 wurde anher bekannt gegeben ...

Welsch (Projektbearbeiter): Die Urwähler sind auch zur Wahl solcher Wahlmänner berechtigt, die in einem anderen als dem eigenen Distrikt aufgestellt wurden

Die hebräische Presse im Jahre 1912 : (Fortsetzung von Seite 167/168)

Josef Lin

Ms. Barth. 167 - Theologische Sammelhandschrift

Vorbesitzer: Brune-Kütze-Legat; Bartholomaeusstift Frankfurt am Main

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 1022 - Bestätigung von Friedrich Schierholz der Anfertigung einer Schopenhauer-Büste für den Preis von 1.600 Mark

u.a. Auftragsarbeit für Eduard von Engert;

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 167 - Bittschreiben von Herrn Dr. Kastner um finanzielle Unterstützung aufgrund der Verarmung als Privatlehrer

u.a.: biographische Angaben; Schlacht bei Waterloo; Studium an der Universität in Berlin; Ministerium für geistliche Angelegenheiten in Berlin; Eingabe beim König von Preussen;

Ms. Praed. 167 (Ausst. 20) - Psalterium. Diurnale

Vorbesitzer: Kartause Mainz, Dominikanerkloster Frankfurt am Main

Ms.Ff.F.Stoltze 3. 167 - Brief von Theobald Kerner an Friedrich Stoltze

Kondolation zum Tode Friedrich Stoltzes II, Übersendung des Bildes Else Körner