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Proprietatea de clusterizare a seismicitatii subcrustale vrancene

GeoX

GeoX

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Analize si discutii despre gruparea epicentrelor/focarelor cutremurelor vrancene, in special a celor foarte adanci. Continuare din vechiul forum.

Am discutat si pe forumul vechi, impreuna cu real32, despre proprietatea de clusterizare a seismicitatii subcrustale vrancene. O sa reluam si aici analiza, fiindca sunt niste aspecte interesante, Realitatea obiectiva este ca exista o proprietate intrinseca de grupare spatiala a focarelor seismelor subcrustale vrancene. Avem, de exemplu:
-gruparea NEHOIU-SIRIU din Muntii Buzaului;
-gruparea GURA TEGHII-LOPATARI din Muntii Buzaului;
-gruparea PIETRELE INSIRATE, de-o parte si de alta a limitei dintre Muntii Buzaului si Muntii Vrancei;
-gruparea de la Vest de NEREJU;
-gruparea COMANDAU-COVASNA;
-gruparea VINTILEASCA.

In aceste clustere se produc, de obicei, cutremure adanci (h > 125-130 km). Cele mai adanci cutremure (h > 140-160 km) sunt, evident, cutremurele vestice. Totusi, alaturi de focarele foarte adanci, apar zone difuze cu seisme mai putin adanci, sa zicem pe la 90-110 km, chiar si in Muntii Buzaului. Asa s-a intamplat in cazul cutremurului de 4,8 grade de la 10 septembrie 2014 (epicentrul fiind plasat intre gruparile de la PIETRELE INSIRATE si, respectiv, GURA TEGHII). Sau in cazul cutremurului mai mic de duminica seara, care a avut epicentrul in zona GURA SIRIULUI, unde de obicei se produc cutremure foarte adanci. Deci e ceva intrinsec Vrancei, ceva care s-a manifestat si acum 10 ani, si acum 20 de ani, s.a.m.d.
Cutremurele mai putin adanci (h = 70-110 km) apar mai ales in capatul de Nord-Est, cele mari toate avand sursele acolo. Totusi sunt posibile cutremure mici si moderate pe partea centrala si chiar la Sud-Vest, dar distribuite mai difuz, de obicei pe langa sau intre clusterele de cutremure mai adanci.
 
Clusterul PIETRELE INSIRATE: localizat pe partea central-vestica a ariei seismogene vrancene, de o parte si de alta a limitei dintre judetele Vrancea si Buzau. Coordonatele geografice sunt urmatoarele:
45,635+/-0,035 grade latitudine Nordica
26,475+/-0,075 grade longitudine Estica
Adancimile tipice pentru acest cluster sunt foarte mari: 140-170 km. Totusi, din cand in cand mai apar si cutremure cu focare la 120-140 km, si chiar la 100-120 km. In acest cluster s-a produs cutremurul vrancean moderat din 14 mai 2005 (ML=5,6, adancime 148 km). Incepand din 1960 s-au produs mai multe cutremure moderate cu magnitudini de 5,5+ in acest cluster, la adancimi de 140-160 km.

Clusterul GURA TEGHII-LOPATARI: localizat in Muntii Buzaului, la Sud/Sud-Vest de clusterul PIETRELE INSIRATE, in judetul Buzau. Coordonatele geografice sunt urmatoarele:
45,52+/-0,07 grade latitudine Nordica
26,49+/-0,10 grade longitudine Estica
Adancimile tipice pentru acest cluster sunt 120-140 km dar si 140-160 km. Din cand in cand se mai produc si cutremure cu focare la adancimi mai mici de 100-120 km, dar cu magnitudini relativ mici. In secolul XX nu s-au inregistrat instrumental cutremure moderate (cu ML 5,5+) in acest cluster, dar s-au produs doua cutremure puternice la 6 octombrie 1908 (MGR 6,75, adancime 125 km) si 30/31 august 1986 (MGR 7,0, adancime 131 km).

Clusterul NEHOIU-SIRIU: localizat in Muntii Buzaului, la Sud-Vest de clusterul GURA TEGHII-LOPATARI, in judetul Buzau. Coordonatele geografice sunt urmatoarele:
45,43+/-0,07 grade latitudine Nordica
26,32+/-0,07 grade longitudine Estica
Adancimile tipice pentru acest cluster sunt 140-170 km, dar mai apar din cand in cand si cutremure cu focare la adancimi mai mici, de ordin 120-140 km, mai rar la adancimi mai mici de 120 km. Se cunosc doua cutremure moderate inregistrate instrumental ca avand sursele in acest cluster: cutremurul din 8 noiembrie 1940 (magnitudine 5,5 si adancime 145 km) si cutremurul din 28 aprilie 1999 (magnitudine 5,7 si adancime 151 km).
 
Este oarecum interesant faptul ca clusterul GURA TEGHII-LOPATARI (care nu a generat cutremure moderate, ci doar doua cutremure puternice in 1908 si 1986) este inconjurat de doua clustere in care sunt inregistrate in perioada instrumentala numai cutremure moderate: PIETRELE INSIRATE si NEHOIU-SIRIU.
 
Arhi Tect:

GeoX a spus: ?
Este oarecum interesant faptul ca clusterul GURA TEGHII-LOPATARI (care nu a generat cutremure moderate, ci doar doua cutremure puternice in 1908 si 1986) este inconjurat de doua clustere in care sunt inregistrate in perioada instrumentala numai cutremure moderate: PIETRELE INSIRATE si NEHOIU-SIRIU.
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Cum delimita?i aceste trei clustere buzoiene ?ntre ele? Exist? ni?te f??ii de separare, de o l??ime semnificativ?, ?n care nu se plaseaz? niciodat? epicentre ale unor seisme (ad?ncimea focarelor nefiind totu?i ?n acest caz un criteriu clar de departajare)?
 
Criteriul spatial este utilizat in acest caz, deci clusterizare pe criteriu spatial. E vorba de faptul ca epicentrele si focarele tind sa fie grupate sau concentrate in anumite locatii. Practic clusterele seismice corespund acestor concentrari. Sigur ca seisme apar si in afara lor, dar in numar mai mic. In general, clusterizarea este procesul prin care mai multe obiecte sunt grupate pe criterii de similaritate, in vederea optimizarii unei functii obiectiv. Revenind la cazul Vrancei, este de notat ca in ultimul secol cutremurele mari s-au produs numai in clustere din capetele blocului litosferic.
 
Clusterul VINTILEASCA: localizat in Muntii Vrancei, in partea central-estica a ariei seismogene, in judetul Vrancea. Coordonatele geografice sunt urmatoarele:
45,64+/-0,045 grade latitudine Nordica
26,70+/-0,055 grade longitudine Estica
Adancimile tipice pentru acest cluster sunt 100-125 km, dar exista o grupare relativ ingusta de cutremure mai adanci, cu focare la adancimi in jur de 135-140 km, asa cum a fost, de exemplu, cutremurul din 13 decembrie 2005 (ML=5,3 si adancime 137 km). Este de remarcat ca gruparea ingusta de cutremure mai adanci din acest cluster este inconjurata de focare mai putin adanci (la 100-120 km si chiar la 80-100 km adancime).
 
Arhi Tect:

GeoX a spus: ?
Criterul spatial este utilizat in acest caz, deci clusterizare pe criteriu spatial. [...] Revenind la cazul Vrancei, este de notat ca in ultimul secol cutremurele mari s-au produs numai in clustere din capetele blocului litosferic.
​
Multumesc pentru precizari! Gruparea seismelor majore pe capete ar putea conduce la ideea unei miscari de ansamblu, de scufundare a intregului fragment de legatura cu scoarta a blocului paleosubdus, rupturile cele mai violente fiind la contactul cu vecinatatile aderente sau comprimate in el. Aceasta reechilibrare a situatiei, de pe urma unei subductii finalizate instabil, genereaza aparent si o rotatie, care implica ridicarea muchiei din curbura lantului muntos si scufundarea zonei Galatiului. De fapt, la capetele acestei axe de inclinare sunt de asteptat si seismele crustale semnificative, ceea ce este logic. Pe capetele axei cvasi-perpendiculare, le avem pe cele subcrustale. De remarcat si faptul ca aceasta axa a subcrustalelor lucreaza diferit la cele doua capete, pe de o parte la adancimi diferite, dar - lucru ce mi se pare semnificativ - si cu cicluri de repetare si magnitudini diferite. In timp ce la nord-est avem clar un ciclu mare de aprox. 275 de ani, subdivizat in cicluri de 137 si 68 de ani, iar seismele majore de aici depasesc frecvent 7,1 grade, la sud-vest ciclul mare pare fragmentat in cicluri mai scurte si neregulate, iar magnitudinile nu depasesc de regula 7,1.
​
 
Aici trebuie notat marele cutremur buzoian din 1738. Dupa acest eveniment toate cutremurele din SV au avut magnitudini MGR de cel mult 6,8-7,0. Nu e ceva nou, s-a vazut si la altii o situatie in care dupa un mare cutremur produs pe un anumit segment, sa urmeze o perioada de cateva sute de ani cu evenimente mai mici pe segmentul respectiv. Urmatoarele cutremure din Muntii Buzaului, produse in 1790, 1829, 1894, 1908 si 1986 au avut magnitudini de cel mult 7,0 grade pe scara Gutenberg-Richter, fata de 7,4-7,5 cu cat este cotat marele cutremur de la GURA TEGHII din 11 iunie 1738. Deci de interes ar fi un cutremur major pe clusterul principal din Muntii Buzaului, zona GURA TEGHII-LOPATARI.
 
In multe cazuri, clusterizarea se realizeaza si intr-o maniera ierarhica, de fapt, in functie de aplicatie/natura datelor, se admite ca un cluster mai mare este constituit din mai multe sub-clustere mai mici. In cazul cutremurelor vrancene, sa vedem ce e cu seismele centrale din zona NEREJU.

Clusterul NEREJU: localizat in Muntii Vrancei, in partea centrala a ariei seismogene, in judetul Vrancea. Coordonatele geografice sunt urmatoarele:
45,70+/-0,05 grade latitudine Nordica
26,65+/-0,05 grade longitudine Estica
In acest caz s-ar putea distinge, de fapt, mai multe sub-clustere, diferentiate in functie de adancimile focale in care se grupeaza hipocentrele respective, dar si de unele variatii spatiale intra-cluster, mai la Est sau mai la Vest de NEREJU. Astfel, mai spre partea estica a acestui cluster tind sa domine cutremurele cu focare mai putin adanci, la 70-110 km sau 100-120 km, cutremurele cu focare mai adanci de 125 km fiind mai rare. In partea mai vestica, sa zicem cam la 8-10 km Vest de NEREJU (45,70 grade latitudine Nordica, 26,60 grade longitudine Estica, locatie cvasi-centrala a epicentrelor cutremurelor din Vrancea) apar atat cutremure mai putin adanci (cu focare la 80-120 km adancime), cat si cutremure mai adanci, mai jos de 120 km, uneori chiar si foarte adanci (cazuri de cutremure cu focare la 140-160 km). Cutremurul moderat din 25 aprilie 2009 (ML=5,7) a avut focarul la adancimea de 110 km, iar coordonatele epicentrului au fost 45,68 grade latitudine Nordica, 26,62 grade longitudine Estica. Cutremurul din 1 august 1985 (ML=5,6), cu focar la 93 km adancime, a avut epicentrul localizat la 45,73 grade latitudine Nordica, 26,62 grade longitudine Estica; aceasta locatie este foarte apropiata de cea a epicentrelor cutremurelor din 24 septembrie si 28 decembrie 2016 (ML=5,3 si adancimi focale 92 km, respectiv 98 km): 45,71 grade latitudine Nordica, 26,60 grade longitudine Estica. Iata insa si doua cazuri de cutremure foarte adanci cu epicentrele situate in clusterul central de la NEREJU, un pic spre Vest, dar oricum din aceeasi grupare mare: cutremurul din 6 aprilie 2000, ML=5,5, adancime 143 km, coordonate geografice 45,75 grade latitudine Nordica, 26,64 grade longitudine Estica; cutremurul din 18 iunie 2005, ML=5,4, adancime 154 km, coordonate geografice 45,72 grade latitudine Nordica, 26,66 grade longitudine Estica.
 
Cutremure mici sau chiar moderate se produc si intre clusterele principale. Iata, de exemplu, cazul cutremurului din 6 octombrie 2013: ML=5,6, adancime 135 km, localizare 45,67 grade latitudine Nordica, 26,58 grade longitudine Estica. Spuneam ceva mai demult ca acest cutremur a avut epicentrul intre epicentrele cutremurelor din 2005 si 2009, deci intre clusterul principal de la PIETRELE INSIRATE si clusterul principal de la NEREJU; si adancimea focala s-a incadrat intre palierul tipic pentru PIETRELE INSIRATE si cel tipic pentru NEREJU.
 
In cazul cutremurelor foarte adanci din clusterul PIETRELE INSIRATE (cu focare la adancimi in jur de 140-160 km), am putea observa o ritmicitate interesanta in cazul cutremurelor moderate cu ML 5,5+.
Incepand din 1960, se remarca alternanta unor perioade cu succesiune mai rapida a cutremurelor din clasa 5,5+ cu perioade de 10-15 ani in care lipsesc aceste cutremure:


13.10.1960 02:21:25 UTC 45,70N 26,40E 160 km 5,5
02.10.1966 11:21:44 UTC 45,70N 26,50E 140 km 5,5

01.10.1976 17:50:43 UTC 45,68N 26,49E 146 km 5,6
18.07.1981 00:02:58 UTC 45,69N 26,42E 166 km 5,5
04.09.1987 01:40:29 UTC 45,68N 26,43E 161 km 5,5

24.05.2001 17:34:02 UTC 45,63N 26,42E 144 km 5,5
14.05.2005 01:53:21 UTC 45,64N 26,53E 148 km 5,6

Deci: 1960, 1966, pauza de 10 ani, apoi 1976, 1981, 1987, pauza de 14 ani, 2001, 2005, pauza de 12 ani (pana acum). Cutremurul din 1960 a incheiat o perioada de 10 ani fara cutremure moderate din clasa 5,5+; perioada 1950-1960 a corespuns cu o etapa de "stabilizare" a Vrancei, dupa activitatea foarte intensa din anii 1929-1950. Deci tendinta de schimbare este marcata de aparitia unui cutremur moderat pe clusterul central-vestic de la PIETRELE INSIRATE. Sa vedem cand reincep cutremurele moderate in clusterul PIETRELE INSIRATE...na ca am facut si o poezie.
clear.png
Sunt foarte interesante aceste cutremure moderate din grupul PIETRELE INSIRATE, ele se produc de obicei la adancimi foarte mari, intre 140-166 km. As mai remarca doua subgrupe de cutremure: unul cu focare in jur de 140-145 km, celalalt cu focare concentrate spre 160 km, si care sunt generate, se pare, la marginea Nord-Vestica a clusterului. Avem o probabilitate destul de mare ca urmatorul cutremur vrancean moderat cu magnitudinea ML 5,5+ sa se produca in clusterul PIETRELE INSIRATE, de asemenea probabilitate mare sa fie foarte adanc, la 140-160 km. Oare ar putea veni chiar de la 160 km ? Cutremurele cele mai adanci, produse la adancimi de 160-166 km, s-au produs in 1960, 1981 si 1987. Cutremurele din 2001 si 2005 s-au produs la adancimi mai mici de 150 km. Ramane de vazut, in orice caz in mod normal trebuie sa urmeze, din nou, un cutremur moderat foarte adanc la PIETRELE INSIRATE. Perioada care a trecut de la cutremurul din 2005 este comparabila, ca lungime, cu perioadele 1966-1976 si 1987-2001.
S-ar parea ca intervale de timp cu lungimi de 10-15 ani separa perioadele in care se produc mai des cutremure foarte adanci in zona PIETRELE INSIRATE (ML=5,5-5,7).
 
Pana acum am discutat despre clusterizarea spatiala, care se refera la grupari de epicentre/focare, mai ales in cazul cutremurelor foarte adanci (mai jos de 130-140 km). Sa vedem cum e si cu clusterizarea temporala, care se refera la faptul ca seismele cu magnitudini peste anumite praguri tind sa apara mai mult in cadrul unor succesiuni de evenimente la intervale de cateva zile-saptamani. De fapt, cred ca clusterizarea temporala are oarecum legatura cu cea spatiala, fiindca ar rezulta din succesiunea reactiilor unor clustere seismice diferite la producerea unor evenimente subcrustale in clustere vecine. De exemplu, din lista cutremurelor cu ML 4,0 produse in perioada 1982-2017, putem observa ca cele mai multe dintre cutremurele vrancene cu ML > 4,5 tind sa apara in cadrul unor succesiuni de evenimente in intervale de la cateva zile la maxim 2 saptamani, precedate sau urmate de pauze seismice mai lungi. In cazul cutremurelor moderate cu ML 5,5+, vedem ca acestea intotdeauna sunt precedate sau/si urmate de alte cutremure cu magnitudini de cel putin 4,6 grade:

16.10.1982 18:57:56 UTC 45,57N 26,58E 140 km ML=4,7
18.10.1982 03:57:30 UTC 45,79N 26,77E _89 km ML=4,1
05.11.1982 21:26:46 UTC 45,66N 26,54E 130 km ML=4,8
07.11.1982 22:32:06 UTC 45,66N 26,47E 153 km ML=4,5

01.12.1982 16:52:56 UTC 45,68N 26,65E 145 km ML=4,7
12.12.1982 21:25:53 UTC 45,69N 26,44E 154 km ML=4,2

09.01.1983 10:13:41 UTC 45,75N 26,58E _91 km ML=4,3
25.01.1983 07:34:50 UTC 45,75N 26,64E 150 km ML=5,3
16.02.1983 23:43:47 UTC 45,81N 26,62E 143 km ML=4,7

06.03.1983 18:13:26 UTC 45,57N 26,36E 146 km ML=4,1
11.03.1983 06:29:25 UTC 45,68N 26,54E 154 km ML=5,0

02.04.1983 23:24:42 UTC 45,57N 26,39E 127 km ML=4,1
12.04.1983 20:10:25 UTC 45,67N 26,61E 141 km ML=5,4
24.04.1983 06:56:49 UTC 45,68N 26,66E 129 km ML=4,1

05.05.1983 12:45:47 UTC 45,75N 26,86E _91 km ML=4,4
21.05.1983 02:13:46 UTC 45,62N 26,56E 140 km ML=4,9
06.06.1983 19:19:27 UTC 45,72N 26,77E 128 km ML=4,5

12.01.1984 07:55:11 UTC 45,71N 26,63E _92 km ML=4,0
20.01.1984 07:24:23 UTC 45,50N 26,40E 131 km ML=5,1
29.01.1984 20:27:24 UTC 45,58N 26,33E 150 km ML=4,0
07.02.1984 11:16:43 UTC 45,45N 26,43E 123 km ML=4,5
12.02.1984 19:09:00 UTC 45,69N 26,75E 124 km ML=5,2
21.02.1984 10:00:45 UTC 45,48N 26,44E 132 km ML=4,1
01.03.1984 02:22:21 UTC 45,57N 26,61E 118 km ML=4,2
09.03.1984 15:32:45 UTC 45,55N 26,43E 142 km ML=4,2
21.03.1984 01:36:14 UTC 45,67N 26,66E 134 km ML=4,7

08.05.1984 15:31:17 UTC 45,69N 26,67E 135 km ML=4,1
15.05.1984 21:51:12 UTC 45,50N 26,41E 142 km ML=4,6

14.07.1984 10:03:23 UTC 45,41N 26,35E 132 km ML=4,3
03.08.1984 19:36:28 UTC 45,74N 26,72E _84 km ML=4,3
07.08.1984 09:22:57 UTC 45,59N 26,40E 153 km ML=4,8

05.01.1985 02:40:29 UTC 45,61N 26,22E 152 km ML=4,5
10.01.1985 07:39:03 UTC 45,73N 26,53E 142 km ML=4,0
28.01.1985 10:03:54 UTC 45,62N 26,44E 139 km ML=4,6

06.03.1985 07:21:23 UTC 45,52N 26,29E 155 km ML=4,0
11.03.1985 02:37:36 UTC 45,60N 26,30E 160 km ML=4,2
14.03.1985 09:09:18 UTC 45,55N 26,53E 137 km ML=4,3
15.03.1985 10:39:23 UTC 45,64N 26,55E 150 km ML=4,5
17.03.1985 09:22:48 UTC 45,49N 26,35E 117 km ML=4,5
26.03.1985 07:03:04 UTC 45,69N 26,55E 140 km ML=4,9

25.04.1985 21:24:01 UTC 45,80N 26,77E _94 km ML=4,1
27.04.1985 16:25:42 UTC 45,73N 26,68E _91 km ML=4,8

21.06.1985 16:50:46 UTC 45,63N 26,37E 120 km ML=5,0
26.06.1985 07:40:45 UTC 45,76N 26,57E 121 km ML=4,1

14.07.1985 07:34:02 UTC 45,61N 26,65E 138 km ML=4,2
17.07.1985 06:32:31 UTC 45,65N 26,49E 151 km ML=4,8
01.08.1985 11:17:35 UTC 45,79N 26,77E 119 km ML=5,2
01.08.1985 14:35:04 UTC 45,73N 26,62E _93 km ML=5,6

16.08.1986 06:41:28 UTC 45,58N 26,33E 148 km ML=5,3
17.08.1986 11:56:19 UTC 45,67N 26,47E 105 km ML=5,1
21.08.1986 02:11:07 UTC 45,66N 26,54E 147 km ML=4,0
30.08.1986 21:28:37 UTC 45,52N 26,49E 131 km ML=7,0
30.08.1986 22:50:57 UTC 45,55N 26,46E 141 km ML=4,0
31.08.1986 06:19:50 UTC 45,53N 26,41E 142 km ML=4,3
31.08.1986 06:57:01 UTC 45,57N 26,58E 134 km ML=4,1
31.08.1986 12:35:10 UTC 45,47N 26,39E 126 km ML=4,3
01.09.1986 09:07:06 UTC 45,53N 26,38E 140 km ML=4,6
01.09.1986 22:11:49 UTC 45,52N 26,39E 139 km ML=4,5
02.09.1986 02:00:51 UTC 45,54N 26,43E 143 km ML=5,0
02.09.1986 09:03:26 UTC 45,54N 26,48E 134 km ML=4,5
02.09.1986 21:55:43 UTC 45,55N 26,44E 140 km ML=4,1
02.09.1986 23:21:51 UTC 45,53N 26,36E 146 km ML=4,2
03.09.1986 20:24:59 UTC 45,56N 26,47E 136 km ML=4,5
04.09.1986 01:30:23 UTC 45,49N 26,38E 136 km ML=4,0
04.09.1986 02:15:37 UTC 45,55N 26,45E 147 km ML=4,0
07.09.1986 01:56:11 UTC 45,49N 26,28E 142 km ML=4,1
07.09.1986 04:45:23 UTC 45,51N 26,37E 146 km ML=4,7
07.09.1986 08:00:41 UTC 45,51N 26,36E 140 km ML=4,3
07.09.1986 19:04:03 UTC 45,50N 26,21E 156 km ML=4,3
09.09.1986 03:49:16 UTC 45,53N 26,43E 143 km ML=4,0
17.09.1986 02:56:43 UTC 45,61N 26,61E 136 km ML=4,1
17.09.1986 13:00:53 UTC 45,52N 26,36E 143 km ML=4,3
19.09.1986 00:21:35 UTC 45,53N 26,68E 143 km ML=4,8

10.10.1986 17:16:28 UTC 45,51N 26,31E 132 km ML=4,9
18.10.1986 06:33:27 UTC 45,49N 26,28E 145 km ML=4,0

02.12.1986 08:56:36 UTC 45,50N 26,30E 151 km ML=4,6
10.12.1986 19:44:22 UTC 45,47N 26,38E 151 km ML=4,2
16.12.1986 22:33:56 UTC 45,59N 26,56E 144 km ML=5,0

18.03.1987 17:55:45 UTC 45,69N 26,61E 115 km ML=4,8
21.03.1987 03:01:20 UTC 45,71N 26,46E 169 km ML=4,7
21.03.1987 16:41:23 UTC 45,76N 26,55E 143 km ML=4,2
30.03.1987 03:41:28 UTC 45,88N 26,74E _76 km ML=4,8

04.09.1987 01:40:29 UTC 45,68N 26,43E 160 km ML=5,5
04.09.1987 09:58:34 UTC 45,72N 26,44E 151 km ML=5,2
23.09.1987 20:40:18 UTC 45,60N 26,58E 140 km ML=4,2
25.09.1987 07:55:17 UTC 45,69N 26,65E 142 km ML=4,8
05.10.1987 16:09:21 UTC 45,67N 26,54E 146 km ML=4,2
09.10.1987 07:12:19 UTC 45,65N 26,48E 156 km ML=4,5
19.10.1987 19:20:08 UTC 45,70N 26,68E 121 km ML=5,2

07.01.1988 10:21:44 UTC 45,67N 26,67E 139 km ML=5,1
08.01.1988 16:50:39 UTC 45,49N 26,41E 133 km ML=5,2
21.01.1988 17:41:56 UTC 45,61N 26,53E 144 km ML=4,2

15.06.1988 21:02:41 UTC 45,79N 26,88E 101 km ML=4,1
27.06.1988 05:36:20 UTC 45,76N 26,89E _97 km ML=4,8

03.11.1988 15:56:48 UTC 45,82N 26,90E _84 km ML=4,8
19.11.1988 12:56:13 UTC 45,55N 26,53E 125 km ML=4,0
26.11.1988 10:25:02 UTC 45,57N 26,78E 127 km ML=4,2
11.12.1988 11:20:49 UTC 45,59N 26,47E 126 km ML=4,5
15.12.1988 11:24:08 UTC 45,74N 26,68E 157 km ML=4,1
24.12.1988 21:10:01 UTC 45,47N 26,39E 149 km ML=4,0
28.12.1988 08:36:16 UTC 45,66N 26,53E 155 km ML=4,0

31.12.1988 17:46:18 UTC 45,59N 26,46E 151 km ML=4,2
01.01.1989 13:57:42 UTC 45,64N 26,55E 153 km ML=4,2
03.01.1989 01:14:58 UTC 45,73N 26,71E 136 km ML=4,7
03.01.1989 21:39:11 UTC 45,73N 26,49E 147 km ML=4,0

16.05.1989 00:05:42 UTC 45,69N 26,59E 147 km ML=4,1
16.05.1989 01:30:22 UTC 45,48N 26,30E 131 km ML=4,3
21.05.1989 02:15:41 UTC 45,48N 26,44E 133 km ML=4,9

22.06.1989 02:37:23 UTC 45,81N 26,53E _82 km ML=4,2
08.07.1989 15:41:13 UTC 45,51N 26,42E 143 km ML=4,9
16.07.1989 04:26:04 UTC 45,64N 26,47E 143 km ML=4,6

15.08.1989 04:15:05 UTC 45,73N 26,57E 113 km ML=4,9 IZOLAT

03.11.1989 20:55:15 UTC 45,25N 26,08E 147 km ML=4,0
16.11.1989 20:40:23 UTC 45,75N 26,69E 146 km ML=4,2
23.11.1989 04:10:33 UTC 45,42N 26,27E 137 km ML=4,7

01.05.1990 08:41:54 UTC 45,62N 26,51E 139 km ML=4,1
12.05.1990 23:30:15 UTC 45,53N 26,36E 140 km ML=4,3
25.05.1990 06:34:48 UTC 45,39N 26,21E 141 km ML=4,2
30.05.1990 10:40:06 UTC 45,83N 26,89E _91 km ML=6,7
30.05.1990 11:02:21 UTC 45,79N 26,84E _94 km ML=4,4
30.05.1990 11:31:23 UTC 45,86N 26,81E _89 km ML=4,7
30.05.1990 12:06:19 UTC 45,72N 26,81E _80 km ML=4,0
30.05.1990 14:15:53 UTC 45,72N 26,65E _77 km ML=4,0
30.05.1990 20:19:47 UTC 45,81N 26,83E _86 km ML=4,2
31.05.1990 00:17:47 UTC 45,85N 26,91E _87 km ML=6,1
31.05.1990 04:48:44 UTC 45,77N 26,99E _78 km ML=4,8

10.09.1990 08:28:37 UTC 45,84N 26,63E _85 km ML=4,5
30.09.1990 18:54:25 UTC 45,63N 26,48E _77 km ML=4,8
03.10.1990 03:54:07 UTC 45,62N 26,47E 134 km ML=4,6
06.10.1990 19:09:57 UTC 45,44N 26,19E 138 km ML=5,1

29.12.1990 08:33:20 UTC 45,69N 26,58E 158 km ML=4,3
13.01.1991 03:23:49 UTC 45,76N 26,74E 120 km ML=5,3
31.01.1991 13:28:57 UTC 45,80N 26,77E 129 km ML=5,1

31.03.1992 15:04:38 UTC 45,63N 26,58E 154 km ML=5,2
09.04.1992 08:02:50 UTC 45,80N 26,85E 104 km ML=4,2
23.04.1992 16:44:54 UTC 45,50N 26,49E 137 km ML=4,8

02.06.1992 12:12:14 UTC 45,79N 26,81E 109 km ML=4,6
23.06.1992 22:51:08 UTC 45,71N 26,64E 139 km ML=4,0
24.06.1992 17:24:05 UTC 45,71N 26,61E 145 km ML=4,1

16.08.1992 23:58:42 UTC 45,61N 26,48E 105 km ML=4,6 IZOLAT

06.10.1992 09:31:42 UTC 45,51N 26,41E 119 km ML=4,2
12.10.1992 19:33:22 UTC 45,51N 26,53E 116 km ML=5,1
23.10.1992 09:21:11 UTC 45,65N 26,62E 119 km ML=4,8
10.11.1992 01:17:14 UTC 45,63N 26,50E 156 km ML=5,0
11.11.1992 14:06:21 UTC 45,63N 26,64E 121 km ML=4,8
21.11.1992 12:55:48 UTC 45,77N 26,68E 137 km ML=5,2
09.12.1992 23:43:38 UTC 45,57N 26,64E 117 km ML=4,5
15.12.1992 10:25:52 UTC 45,46N 26,20E 146 km ML=4,6

09.03.1993 14:17:05 UTC 45,56N 26,39E 148 km ML=4,6 IZOLAT

30.07.1993 14:25:54 UTC 45,73N 26,53E 123 km ML=4,9
01.08.1993 18:04:06 UTC 44,91N 26,96E _77 km ML=4,0
16.08.1993 12:14:04 UTC 45,56N 26,35E 163 km ML=4,1
26.08.1993 21:32:32 UTC 45,66N 26,62E 146 km ML=5,2
29.08.1993 02:02:01 UTC 45,64N 26,49E 151 km ML=4,1
03.09.1993 03:42:30 UTC 45,57N 26,54E 118 km ML=4,1
18.09.1993 08:04:08 UTC 45,83N 26,37E 155 km ML=4,3

01.02.1994 13:11:19 UTC 45,59N 26,59E 103 km ML=4,1
19.02.1994 12:27:18 UTC 45,54N 26,37E 157 km ML=4,6
27.02.1994 19:29:00 UTC 45,79N 26,78E 118 km ML=4,5
04.03.1994 22:21:35 UTC 45,54N 26,60E 128 km ML=4,5

06.06.1994 07:28:45 UTC 45,67N 26,70E 136 km ML=4,8 IZOLAT

04.09.1994 09:31:00 UTC 45,68N 26,52E 157 km ML=4,0
06.09.1994 20:11:20 UTC 45,49N 26,48E 125 km ML=4,6
08.09.1994 20:26:49 UTC 45,45N 26,45E 128 km ML=4,2

11.10.1994 11:53:16 UTC 45,67N 26,58E 138 km ML=4,1
17.10.1994 20:55:46 UTC 45,46N 26,43E 137 km ML=4,1
18.10.1994 09:00:06 UTC 45,53N 26,35E 153 km ML=4,7

06.09.1995 10:58:45 UTC 45,53N 26,39E 120 km ML=4,5
19.09.1995 19:32:21 UTC 45,63N 26,58E 143 km ML=4,7

10.11.1995 17:45:50 UTC 45,47N 26,35E 133 km ML=4,0
22.11.1995 08:14:02 UTC 45,75N 26,67E 146 km ML=4,0
22.11.1995 10:54:04 UTC 45,52N 26,44E 127 km ML=4,2
27.11.1995 16:03:12 UTC 45,74N 26,78E 129 km ML=4,9

07.06.1996 05:09:23 UTC 45,52N 26,32E 126 km ML=5,0
26.06.1996 10:10:10 UTC 45,51N 26,45E 120 km ML=4,2

01.03.1997 19:26:07 UTC 45,71N 26,63E 104 km ML=4,6
19.03.1997 20:50:59 UTC 45,56N 26,39E 151 km ML=4,1
27.03.1997 18:16:02 UTC 45,40N 26,33E 137 km ML=4,0

14.07.1997 00:37:24 UTC 45,77N 26,75E 128 km ML=4,6 IZOLAT

01.10.1997 16:42:59 UTC 45,60N 26,47E 143 km ML=4,0
11.10.1997 19:00:00 UTC 45,80N 26,80E 110 km ML=5,0
22.10.1997 07:49:01 UTC 45,49N 26,46E 124 km ML=4,2
01.11.1997 22:15:47 UTC 45,54N 26,41E 147 km ML=4,1
18.11.1997 11:23:16 UTC 45,76N 26,71E 123 km ML=5,2

18.12.1997 23:21:21 UTC 45,52N 26,26E 135 km ML=4,2
30.12.1997 04:39:30 UTC 45,54N 26,32E 139 km ML=5,1

13.03.1998 13:14:38 UTC 45,56N 26,33E 155 km ML=5,2
09.04.1998 10:24:58 UTC 45,37N 26,35E 134 km ML=4,0
14.04.1998 01:03:52 UTC 45,73N 26,57E 141 km ML=4,0
23.04.1998 06:37:08 UTC 45,75N 26,70E _90 km ML=4,0
04.05.1998 16:10:10 UTC 45,73N 26,45E 145 km ML=4,3

03.07.1998 06:14:49 UTC 45,67N 26,76E 136 km ML=4,6
27.07.1998 15:02:18 UTC 45,67N 26,53E 135 km ML=4,9

17.03.1999 07:01:16 UTC 45,65N 26,49E 150 km ML=4,1
17.03.1999 22:10:44 UTC 45,70N 26,56E 142 km ML=4,4
22.03.1999 19:25:53 UTC 45,52N 26,31E 144 km ML=4,8
23.03.1999 09:11:41 UTC 45,68N 26,50E 154 km ML=4,3

28.04.1999 08:47:56 UTC 45,49N 26,27E 151 km ML=5,7
29.04.1999 18:44:12 UTC 45,62N 26,40E 148 km ML=4,3

29.06.1999 20:04:07 UTC 45,61N 26,52E 131 km ML=4,6
13.07.1999 13:10:57 UTC 45,70N 26,49E 132 km ML=4,3

08.11.1999 19:22:52 UTC 45,55N 26,35E 138 km ML=5,1
14.11.1999 09:05:59 UTC 45,52N 26,27E 132 km ML=5,0

15.02.2000 02:32:53 UTC 45,86N 26,74E 105 km ML=4,6
08.03.2000 22:11:29 UTC 45,87N 26,72E _74 km ML=4,9

06.04.2000 00:10:38 UTC 45,75N 26,64E 143 km ML=5,5 APARENT IZOLAT

27.02.2001 19:19:24 UTC 45,64N 26,50E 153 km ML=4,1
04.03.2001 15:38:45 UTC 45,51N 26,24E 154 km ML=5,3
18.03.2001 06:33:01 UTC 45,49N 26,24E 153 km ML=4,5
28.03.2001 22:07:47 UTC 45,77N 26,53E 121 km ML=4,7

20.05.2001 03:59:00 UTC 45,59N 26,44E 150 km ML=4,6
24.05.2001 17:34:02 UTC 45,63N 26,42E 144 km ML=5,5

06.07.2001 15:50:04 UTC 45,53N 26,30E 153 km ML=4,2
20.07.2001 05:09:40 UTC 45,75N 26,79E 132 km ML=5,4
21.07.2001 00:40:59 UTC 45,67N 26,60E 144 km ML=4,0

17.10.2001 13:01:32 UTC 45,60N 26,56E _87 km ML=4,6
17.10.2001 15:35:03 UTC 45,64N 26,52E 146 km ML=4,2

16.03.2002 22:39:08 UTC 45,55N 26,46E 142 km ML=4,7 IZOLAT

03.05.2002 18:31:59 UTC 45,58N 26,33E 162 km ML=5,1
15.05.2002 04:26:16 UTC 45,55N 26,36E 153 km ML=4,3

14.07.2002 20:18:03 UTC 45,52N 26,43E 126 km ML=4,2
03.08.2002 12:40:17 UTC 45,67N 26,63E 141 km ML=4,9
04.08.2002 06:25:40 UTC 45,66N 26,49E 158 km ML=4,2
05.08.2002 21:02:08 UTC 45,53N 26,47E 139 km ML=4,1

03.11.2002 20:30:22 UTC 45,74N 26,86E _90 km ML=4,3
30.11.2002 08:15:48 UTC 45,62N 26,55E 166 km ML=5,2

05.10.2003 21:38:18 UTC 45,58N 26,45E 146 km ML=5,2 IZOLAT

21.01.2004 05:49:11 UTC 45,52N 26,46E 118 km ML=4,5
07.02.2004 11:58:22 UTC 45,67N 26,62E 143 km ML=4,7
13.02.2004 17:48:40 UTC 45,68N 26,69E 129 km ML=4,0

17.03.2004 23:42:08 UTC 45,69N 26,53E 157 km ML=4,5
02.04.2004 03:21:04 UTC 45,73N 26,67E 142 km ML=4,1
04.04.2004 06:41:05 UTC 45,64N 26,48E 150 km ML=4,7
06.04.2004 22:35:55 UTC 45,63N 26,51E 150 km ML=4,2

02.07.2004 01:38:08 UTC 45,69N 26,80E 109 km ML=4,1
10.07.2004 00:34:58 UTC 45,69N 26,57E 150 km ML=4,7
22.07.2004 17:09:30 UTC 45,58N 26,44E 147 km ML=4,6

27.09.2004 09:16:22 UTC 45,70N 26,45E 166 km ML=5,2
24.10.2004 19:56:13 UTC 45,49N 26,42E 171 km ML=4,7
27.10.2004 20:34:36 UTC 45,84N 26,63E 105 km ML=6,0

11.11.2004 14:24:12 UTC 45,48N 26,45E 127 km ML=4,1
17.11.2004 11:31:03 UTC 45,73N 26,72E 127 km ML=4,7
22.11.2004 09:21:55 UTC 45,57N 26,43E 150 km ML=4,4
23.11.2004 18:33:25 UTC 45,76N 26,73E 130 km ML=4,3

09.05.2005 06:53:54 UTC 45,48N 26,30E 143 km ML=4,4
14.05.2005 01:53:21 UTC 45,64N 26,53E 148 km ML=5,6
14.05.2005 06:36:45 UTC 45,63N 26,53E 149 km ML=4,6
17.05.2005 22:48:14 UTC 45,34N 26,28E 153 km ML=4,0

18.06.2005 15:16:41 UTC 45,72N 26,66E 154 km ML=5,4
26.06.2005 13:59:46 UTC 45,57N 26,48E 137 km ML=4,1

23.08.2005 22:53:59 UTC 45,58N 26,41E 145 km ML=4,3
05.09.2005 14:23:34 UTC 45,75N 26,70E _94 km ML=4,7
08.09.2005 16:35:51 UTC 45,52N 26,37E 147 km ML=4,7
10.09.2005 04:56:53 UTC 45,24N 27,23E _10 km ML=4,0
17.09.2005 06:08:42 UTC 45,61N 26,39E 156 km ML=4,6

21.10.2005 01:17:38 UTC 45,58N 26,43E 127 km ML=4,5
26.10.2005 22:51:22 UTC 45,68N 26,50E 154 km ML=4,7

13.12.2005 12:14:45 UTC 45,68N 26,70E 137 km ML=5,3
26.12.2005 22:58:48 UTC 45,54N 26,46E 148 km ML=4,1
28.12.2005 10:53:20 UTC 45,54N 26,34E 152 km ML=4,5

16.02.2006 02:49:39 UTC 45,72N 26,72E 138 km ML=4,6
06.03.2006 10:40:45 UTC 45,69N 26,64E 152 km ML=5,2
19.03.2006 11:05:53 UTC 45,65N 26,48E 158 km ML=4,7
27.03.2006 19:54:17 UTC 45,55N 26,47E 127 km ML=4,3
31.03.2006 05:35:48 UTC 45,85N 26,88E _79 km ML=4,1

02.09.2006 17:37:09 UTC 45,65N 26,55E 150 km ML=4,4
23.09.2006 05:44:07 UTC 45,54N 26,37E 133 km ML=4,7

09.11.2006 15:49:48 UTC 45,55N 26,49E 122 km ML=4,4
13.11.2006 04:33:11 UTC 45,72N 26,81E 133 km ML=4,3
18.11.2006 16:14:06 UTC 45,64N 26,58E 152 km ML=4,5
19.11.2006 20:51:12 UTC 45,69N 26,57E 159 km ML=4,6

17.01.2007 13:17:21 UTC 45,60N 26,40E 132 km ML=4,7 IZOLAT

14.02.2007 06:56:37 UTC 45,53N 26,25E 151 km ML=4,9
15.02.2007 02:32:53 UTC 45,86N 26,74E 105 km ML=4,6
09.03.2007 21:44:17 UTC 45,59N 26,31E 160 km ML=4,7
28.03.2007 00:59:04 UTC 45,64N 26,44E 152 km ML=4,4
05.04.2007 01:22:28 UTC 45,70N 26,54E 112 km ML=4,5

03.05.2007 20:07:11 UTC 45,73N 26,60E _94 km ML=4,1
05.05.2007 17:30:08 UTC 45,72N 26,61E 103 km ML=4,0
12.05.2007 19:06:40 UTC 45,65N 26,44E 153 km ML=4,6
27.05.2007 10:06:50 UTC 45,62N 26,49E 157 km ML=4,5

30.01.2008 13:09:30 UTC 45,58N 26,48E 146 km ML=4,7
09.02.2008 08:38:50 UTC 45,53N 26,39E 144 km ML=4,6
11.02.2008 03:31:30 UTC 45,62N 26,60E 117 km ML=4,7
16.02.2008 04:25:05 UTC 45,58N 26,37E 150 km ML=4,0

22.05.2008 16:25:30 UTC 45,63N 26,59E 127 km ML=4,0
25.05.2008 09:31:33 UTC 45,53N 26,28E 158 km ML=4,7
31.05.2008 04:32:43 UTC 45,66N 26,60E 148 km ML=4,7

26.06.2008 21:46:28 UTC 45,70N 26,63E 141 km ML=4,4
03.07.2008 00:55:11 UTC 45,58N 26,33E 159 km ML=4,5
03.07.2008 13:44:05 UTC 45,68N 26,51E 151 km ML=4,3
04.07.2008 23:19:26 UTC 45,63N 26,53E 151 km ML=4,7
15.07.2008 17:41:13 UTC 45,44N 26,22E 144 km ML=4,5
16.07.2008 12:27:33 UTC 45,56N 26,36E 149 km ML=4,6

02.10.2008 14:04:48 UTC 45,63N 26,47E 148 km ML=4,7
15.10.2008 13:39:18 UTC 45,62N 26,44E 144 km ML=4,4
20.10.2008 11:03:02 UTC 45,88N 26,83E _74 km ML=4,2
21.10.2008 20:33:12 UTC 45,69N 26,49E 157 km ML=4,1

01.12.2008 21:23:03 UTC 45,66N 26,51E 151 km ML=4,7
17.12.2008 07:37:49 UTC 45,69N 26,48E _89 km ML=4,6

15.01.2009 01:12:38 UTC 45,55N 26,33E 154 km ML=4,6 IZOLAT

12.04.2009 16:51:38 UTC 45,70N 26,58E 144 km ML=4,5
25.04.2009 17:18:48 UTC 45,68N 26,62E 110 km ML=5,7
26.04.2009 23:19:15 UTC 45,69N 26,64E 104 km ML=4,1
12.05.2009 01:15:12 UTC 45,55N 26,39E 134 km ML=4,8
27.05.2009 03:12:50 UTC 45,69N 26,49E 152 km ML=4,8

24.07.2009 20:27:09 UTC 45,70N 26,61E 140 km ML=5,2
25.07.2009 05:57:42 UTC 45,49N 26,32E 133 km ML=4,1

09.10.2009 04:38:21 UTC 45,72N 26,63E _81 km ML=4,3
15.10.2009 20:54:05 UTC 45,65N 26,49E 151 km ML=4,7
22.10.2009 12:20:57 UTC 45,68N 26,48E 156 km ML=5,1
26.10.2009 05:14:35 UTC 45,65N 26,55E 131 km ML=4,0

05.12.2009 18:12:28 UTC 45,82N 26,81E 117 km ML=4,6
26.12.2009 23:04:39 UTC 45,77N 26,69E 110 km ML=4,7
30.12.2009 06:12:34 UTC 45,78N 26,70E 119 km ML=4,1

25.02.2010 15:51:28 UTC 45,59N 26,55E 111 km ML=4,7
28.02.2010 18:55:11 UTC 45,73N 26,59E 156 km ML=4,2
13.03.2010 14:20:30 UTC 45,65N 26,46E 160 km ML=4,7
26.03.2010 18:36:48 UTC 45,69N 26,54E _88 km ML=4,6

24.05.2010 08:18:00 UTC 45,66N 26,40E 161 km ML=4,3
08.06.2010 15:16:10 UTC 45,60N 26,43E 116 km ML=5,1
09.06.2010 03:42:58 UTC 45,60N 26,38E 167 km ML=4,3
25.06.2010 23:14:08 UTC 45,70N 26,50E 154 km ML=4,3
12.07.2010 14:52:58 UTC 45,68N 26,52E 105 km ML=4,7

30.08.2010 20:51:38 UTC 45,71N 26,59E 146 km ML=4,7 IZOLAT

30.09.2010 05:31:22 UTC 45,53N 26,36E 142 km ML=4,8 IZOLAT

17.04.2011 11:41:03 UTC 45,63N 26,44E 124 km ML=4,3
01.05.2011 02:24:15 UTC 45,58N 26,44E 146 km ML=5,4

04.10.2011 02:40:48 UTC 45,55N 26,51E 142 km ML=5,3
06.10.2011 13:05:29 UTC 45,60N 26,57E 119 km ML=4,3
13.10.2011 20:03:17 UTC 45,59N 26,43E 149 km ML=4,2
15.10.2011 22:09:02 UTC 45,58N 26,43E 146 km ML=4,0
24.10.2011 06:19:41 UTC 45,61N 26,42E 148 km ML=4,4

10.01.2012 18:25:45 UTC 45,50N 26,28E 148 km ML=4,6
19.01.2012 18:05:54 UTC 45,58N 26,42E 129 km ML=4,2

06.07.2012 22:48:00 UTC 45,69N 26,67E 116 km ML=4,7
12.07.2012 02:20:24 UTC 45,71N 26,54E 116 km ML=4,6

01.12.2012 20:52:07 UTC 45,74N 26,75E _93 km ML=4,8 IZOLAT

06.10.2013 01:37:21 UTC 45,67N 26,58E 135 km ML=5,6
15.10.2013 19:33:12 UTC 45,62N 26,55E 141 km ML=4,9

12.01.2014 18:26:02 UTC 45,51N 26,43E 137 km ML=4,4
23.01.2014 06:15:04 UTC 45,49N 26,25E 132 km ML=4,9
03.02.2014 00:26:31 UTC 45,67N 26,52E 139 km ML=4,3
24.02.2014 00:22:54 UTC 45,74N 26,67E 104 km ML=4,5

26.03.2014 19:46:28 UTC 45,66N 26,54E 133 km ML=4,6
29.03.2014 01:55:16 UTC 45,35N 26,23E 144 km ML=4,3
29.03.2014 19:18:05 UTC 45,61N 26,47E 134 km ML=5,0
03.04.2014 12:38:56 UTC 45,49N 26,40E 128 km ML=4,7
07.04.2014 12:59:53 UTC 45,49N 26,27E 112 km ML=4,1

05.08.2014 23:24:59 UTC 45,58N 26,54E 134 km ML=4,0
24.08.2014 07:12:49 UTC 45,57N 26,37E 147 km ML=4,6
29.08.2014 06:24:29 UTC 45,54N 26,37E 126 km ML=4,1
10.09.2014 19:45:57 UTC 45,60N 26,45E 106 km ML=4,8

03.01.2015 03:39:34 UTC 45,78N 26,68E _79 km ML=4,1
04.01.2015 19:40:38 UTC 45,53N 26,37E 120 km ML=4,5
14.01.2015 03:10:53 UTC 45,55N 26,35E 146 km ML=4,2
24.01.2015 07:55:47 UTC 45,71N 26,57E _88 km ML=4,7
28.01.2015 22:51:59 UTC 45,64N 26,49E 129 km ML=4,1

27.02.2015 06:11:40 UTC 45,73N 26,67E 130 km ML=4,2
16.03.2015 15:49:49 UTC 45,60N 26,45E 118 km ML=4,7
29.03.2015 00:44:58 UTC 45,62N 26,48E 145 km ML=4,8

04.08.2016 10:54:40 UTC 45,59N 26,55E 140 km ML=4,4
14.08.2016 14:44:31 UTC 45,62N 26,45E 146 km ML=4,1
01.09.2016 07:49:21 UTC 45,61N 26,39E 144 km ML=4,4
08.09.2016 17:03:02 UTC 45,64N 26,51E 138 km ML=4,2
23.09.2016 23:11:20 UTC 45,71N 26,62E _92 km ML=5,8

27.12.2016 23:20:55 UTC 45,71N 26,60E _97 km ML=5,8 CUTREMUR-PERECHE PENTRU CEL DIN 24.09

08.02.2017 09:52:06 UTC 45,70N 26,67E 130 km ML=4,4
08.02.2017 15:08:20 UTC 45,49N 26,28E 123 km ML=5,0

03.05.2017 05:59:35 UTC 45,61N 26,52E 136 km ML=4,3
06.05.2017 17:01:11 UTC 45,48N 26,37E 130 km ML=4,0
19.05.2017 20:02:44 UTC 45,72N 26,75E 122 km ML=4,7

01.08.2017 10:27:51 UTC 45,54N 26,44E 104 km ML=4,7
02.08.2017 02:32:12 UTC 45,53N 26,41E 131 km ML=5,0
08.08.2017 08:34:30 UTC 45,66N 26,51E 140 km ML=4,2

Se observa ca au fost si niste cazuri de cutremure IZOLATE sau APARENT IZOLATE, care arata ca se poate admite o anumita variabilitate in functie de conjuncturi specifice interne.
 
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