Renseignements généraux

Nº de série

3324

Nº de partie

2

Nombre total de parties

5

Ou

S/O

Brevets

S/O

Description générale

STEEL; SYNTHETIC; ELASTIC STRAPS

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

159,0 cm

Largeur

41,0 cm

Hauteur

39,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Géophysique

Sous-catégorie

S/O

Fabricant

Ou

Sprengnether

Pays

United States of America

État/province

Missouri

Ville

St. Louis

Contexte

Pays

Canada

État/province

Ontario

Période

PROBABLY THE 1960S UP TO THE 1980S

Canada

THESE RECORDERS WERE PART OF A SEISMOGRAPH STATION WHICH WAS ONE OF ABOUT 2 DOZEN THAT WERE INSTALLED ACROSS CANADA IN THE GSC'S NETWORK TO MONITOR ACTIVITY OF THE EARTH'S CRUST TO DETERMINE THE LOCATION OF EARTHQUAKES. THIS INFORMATION WAS USED BY RESEARCHERS STUDYING DYNAMICS OF THE EARTH'S CRUST & PLATE DYNAMICS [REF 1].

Fonction

USED TO RECORD THE MOVEMENT OF THE MIRRORS OF 3 GALVANOMETERS CONNECTED TO SEISMOMETERS IN ORDER TO PLOT THE EARTH'S MOTIONS AS A PHOTOGRAPHIC RECORD.

Technique

PREVIOUS MODELS RECORDED THE MOTION OF THE SEISMOMETER PENDULUM DIRECTLY WITH PEN ON PAPER; THIS DEVICE RECORDED THE MOTION AS REFLECTED FROM MIRRORS OF GALVANOMETERS ON TO PHOTOGRAPHIC PAPER; MODERN ONES RECORD THE CURRENT VARIATIONS OF ELECTROMAGNETS FEEDING INTO A COMPUTER [REF 1].

Notes sur la région

Inconnu

Détails

Marques

MFG'S PLATE: ‘[LOGO]/ SPRENGNETHER INSTRUMENT CO./ ST. LOUIS, MO./ U.S.A./ 3324'/ DECAL: ‘S-20021/ DO NOT REMOVE TAG'/ THREE PLATES ON TOP OF DEVICE: [1st plate]: ‘THUNDER BAY, ONTARIO ON-DATE-DEBUT/ 48 [degrees] 25' N 89 [degrees] 16' W/O OFF-DATE-FIN/ S.P./P.C. --Z--[ARROW] Ts 0.99 hs 0.79 Tg 0.23 hg 0.78/ UT/TU -CORR./ UT/TU-CORR./ MAG./AMP. @ 1 sec. 23,800/ Z/ (LHC)/ CAL./ 11/83'/ [2nd plate]: ‘THUNDER BAY, ONTARIO ON-DATE-DEBUT/ 48 [degrees] 25'N 89[degrees] 16' W/O OFF-DATE-FIN/ S.P./P.C.-N-[ARROW] Ts 0.98 hs 0.82 Tg 0.20 hg 0.84/ UT/TU -CORR./ UT/TU-CORR./ MAG./AMP. @ 1 sec. 23,300/N/ (LHC)/ CAL. 11/83'/ [3rd plate]: ‘THUNDER BAY, ONTARIO ON-DATE-DEBUT/ 48 [degrees] 25'N 89 [degrees] 16'W/O Off-date-fin/ S.P./P.C.-E-[ARROW] Ts.0.97 hs 0.90 Tg 0.23 hg 0.88/ UT/TU-CORR./ UT/TU-CORR./ MAG./AMP. @ 1sec. 23,100/E/ (LHC)/ CAL. 11/83'

Manque

From CA of 02/22/2002 by Matthew Bruce: No - appears complete

Fini

FRONT, BOTTOM & SIDE PANELS GREY TEXTURED FINISH/ BLACK KNOBS/ STAINLESS STEEL DRUM/ ELASTIC STRAPS/ HAS BLACK SLOTTED PLATES AFFIXED TO FRONT PANEL

Décoration

S/O