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21222 |
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Date: March 13, 2020 at 22:12:30
From: Skywise, [DNS_Address]
Subject: Roger, quake count oddness |
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So, I've been looking at the catalog data I've
downloaded. Something I did was to count the number of
quakes by magnitude groups per year... How many 4s, 5s
6s, etc.... Magnitude bins by year.
I'm am seeing something odd for the number of 6s for
the years 1973 through 1982. There is about a 30% drop
compared to before and after those years. No other mag
group appears affected. Although 1973 appears to be
when the catalog starts getting much more data.
Could you do a similar check on your dataset? I know
you start at 1974. No need to go past 1990.
Brian
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Responses:
[21223] [21224] [21225] [21229] [21227] [21230] [21233] [21228] [21231] [21232] [21234] [21235] [21236] [21237] [21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] [21226] |
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21223 |
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Date: March 14, 2020 at 08:34:46
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
No, I start at 1973, 4.5+
Yes, I'll do it, may take a day.
I'll post it here unless you want otherwise.
Roger
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Responses:
[21224] [21225] [21229] [21227] [21230] [21233] [21228] [21231] [21232] [21234] [21235] [21236] [21237] [21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] [21226] |
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21224 |
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Date: March 14, 2020 at 08:52:09
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Here is fine.
I was checking this as a step in measuring completenesss
of the catalog.
What you are looking for is a sudden jump in mag 6
quakes starting in 1983.
In looking further back, mag 6 seems fine starting in 1950.
Except for this 1973 - 1982 period. Interestingly, the
total quake count jumps big time in 1973, more small
quakes. Also, a large number of quakes with no magnitude.
It may be all related.
Brian
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Responses:
[21225] [21229] [21227] [21230] [21233] [21228] [21231] [21232] [21234] [21235] [21236] [21237] [21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] [21226] |
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21225 |
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Date: March 14, 2020 at 10:21:58
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Here's what I get
YEAR 4 5 6 7 8
----------------------------------
1973 2577 1330 95 13 0
1974 2598 1312 99 14 0
1975 2608 1447 107 14 1
1976 2550 1649 114 15 2
1977 2405 1686 89 11 2
1978 2602 1526 93 16 0
1979 3024 1366 100 13 0
1980 3271 1299 105 13 1
1981 3209 1168 90 13 0
1982 3232 1425 85 10 0
1983 3563 1673 126 14 0
1984 3683 1579 91 8 0
1985 4281 1674 110 13 1
1986 4476 1665 89 4 2
1987 4146 1437 112 11 0
1988 4018 1485 93 8 0
1989 4089 1444 79 6 1
1990 4488 1634 111 18 0
1991 4369 1469 98 18 0
1992 5153 1521 163 24 0
1993 5034 1449 141 15 1
1994 4544 1542 161 13 2
1995 8140 1327 185 22 3
1996 8794 1223 160 21 1
1997 7938 1118 125 20 0
1998 7303 979 113 14 2
1999 7042 1106 123 23 0
2000 8045 1345 153 16 4
2001 8084 1243 124 15 3
2002 8584 1218 130 12 1
2003 8454 1252 145 16 1
2004 10783 1637 146 14 1
2005 13702 1954 154 11 1
2006 13048 1529 139 11 1
2007 12071 1845 176 15 5
2008 12302 1769 168 12 0
2009 6975 1700 143 16 1
2010 10303 2069 151 23 1
2011 13315 2276 185 19 0
2012 9339 1501 118 13 2
2013 9759 1403 124 17 2
2014 15820 1574 143 11 1
2015 13776 1412 127 18 1
2016 13673 1548 131 16 0
2017 11564 1451 104 6 1
2018 11865 1548 108 17 1
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Responses:
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21229 |
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Date: March 14, 2020 at 11:41:45
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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You have 46 total mag 8 quakes.
I have only 33 for the same time span.
Including mag 9 only adds 2 more.
Brian
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Responses:
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21227 |
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Date: March 14, 2020 at 11:00:15
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Are you sure of your code? Our numbers are similar but
don't match, ESPECIALLY on the high mags.
For example, year 2000. You have,
2000 8045 1345 153 16 4
Where I have
2000 3518 1335 145 14 1
I can see us differing a bit on low mags, but we should
match on the high mags.
On mag 4, I am limiting to mag 4.5, but I get 7972 if I
start at mag 4.
Brian
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Responses:
[21230] [21233] [21228] [21231] [21232] [21234] [21235] [21236] [21237] [21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] |
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21230 |
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Date: March 14, 2020 at 11:51:21
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Searching NEIS comes up with nothing for 2000.
Impossible. Something's wrong somewhere.
Roger
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Responses:
[21233] |
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21233 |
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Date: March 14, 2020 at 12:04:27
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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The program I wrote grabs the CSV with no filters
applied. I get everything including a lot of cruft.
That's why I have over 3.6 million records.
Earthquakes only, 1973 thru 2018:
4.0+ - 408,380
4.5+ - 235,586
5.0+ - 75,166
5.5+ - 21,493
6.0+ - 6,395
6.5+ - 2,012
7.0+ - 636
7.5+ - 202
8.0+ - 35
8.5+ - 5
9.0+ - 2
Brian
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Responses:
None |
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21228 |
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Date: March 14, 2020 at 11:39:43
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Here's 2000 from a search I updated recently
2000, 1, 8, 16, 47, 20.58, -16.92, -174.25, 7.2,
183.0, 173
2000, 2, 25, 1, 43, 58.64, -19.53, 173.82, 7.5,
33.0, 185
2000, 3, 28, 11, 0, 22.51, 22.34, 143.73, 7.6,
126.0, 213
2000, 4, 23, 9, 27, 23.32, -28.31, -62.99, 7.0,
608.0, 132
2000, 5, 4, 4, 21, 16.21, -1.11, 123.57, 7.6,
26.0, 268
2000, 5, 12, 18, 43, 18.12, -23.55, -66.45, 7.2,
225.0, 128
2000, 6, 4, 16, 28, 26.17, -4.72, 102.09, 8.3,
33.0, 274
2000, 6, 18, 14, 44, 13.31, -13.80, 97.45, 8.0,
10.0, 425
2000, 7, 16, 3, 57, 45.56, -7.75, 150.92, 7.3,
10.0, 192
2000, 7, 30, 12, 25, 45.57, 33.90, 139.38, 7.1,
10.0, 211
2000, 8, 4, 21, 13, 2.71, 48.79, 142.25, 7.1,
10.0, 662
2000, 8, 6, 7, 27, 12.90, 28.86, 139.56, 7.4,
394.0, 212
2000, 8, 28, 19, 29, 32.33, -4.12, 127.03, 7.1,
33.0, 280
2000, 10, 4, 16, 58, 44.31, -15.42, 166.91, 7.0,
23.0, 186
2000, 10, 6, 4, 30, 19.15, 35.46, 133.13, 7.4,
10.0, 232
2000, 10, 29, 8, 37, 8.77, -4.77, 153.95, 7.0,
50.0, 190
2000, 11, 16, 4, 54, 56.74, -3.98, 152.17, 8.2,
33.0, 190
2000, 11, 16, 7, 42, 16.93, -5.23, 153.10, 7.8,
30.0, 190
2000, 11, 17, 21, 1, 56.49, -5.50, 151.78, 8.2,
33.0, 192
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Responses:
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21231 |
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Date: March 14, 2020 at 11:52:30
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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We differ. But I see why.
How recent was your update? My database is from 3/5/20.
For example, you have but I do not,
2000, 7, 16, 3, 57, 45.56, -7.75, 150.92, 7.3,
10.0, 192
Looking at my raw CSV files, I have that quake listed
at 6.6 mag. It was updated on 1/3/20.
Brian
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Responses:
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21232 |
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Date: March 14, 2020 at 12:02:30
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Here's NEIC 2000
2000-01-08T16:47:20.580Z,-16.925,-174.248,183.4,7.2
2000-02-25T01:43:58.640Z,-19.528,173.818,33,7.1
2000-03-28T11:00:22.510Z,22.338,143.73,126.5,7.6
2000-04-23T09:27:23.320Z,-28.307,-62.99,608.5,7
2000-05-04T04:21:16.210Z,-1.105,123.573,26,7.6
2000-05-12T18:43:18.120Z,-23.548,-66.452,225,7.2
2000-06-04T16:28:26.170Z,-4.721,102.087,33,7.9
2000-06-18T14:44:13.310Z,-13.802,97.453,10,7.9
2000-08-06T07:27:12.900Z,28.856,139.556,394.8,7.4
2000-10-04T16:58:44.310Z,-15.421,166.91,23,7
2000-10-29T08:37:08.770Z,-4.766,153.945,50,7
2000-11-16T04:54:56.740Z,-3.98,152.169,33,8
2000-11-16T07:42:16.930Z,-5.233,153.102,30,7.8
2000-11-17T21:01:56.490Z,-5.496,151.781,33,7.8
2000-12-06T17:11:06.400Z,39.566,54.799,30,7
Helps to do it correctly. Excess edited off.
Roger
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Responses:
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21234 |
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Date: March 14, 2020 at 12:06:39
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Responses:
[21235] [21236] [21237] [21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] |
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21235 |
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Date: March 14, 2020 at 12:26:10
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Neic search for 8+
It didn't find any 9+ which is odd.
1976-01-14T16:47:33.500Z,-28.427,-177.657,33,8
1977-08-19T06:08:55.000Z,-11.164,118.378,25,8.3
1985-03-03T22:47:07.280Z,-33.135,-71.871,33,8
1985-09-19T13:17:47.350Z,18.19,-102.533,27.9,8
1986-05-07T22:47:10.870Z,51.52,-174.776,33,8
1989-05-23T10:54:46.320Z,-52.341,160.568,10,8.02
1994-06-09T00:33:16.230Z,-13.841,-67.553,631.3,8.2
1994-10-04T13:22:55.840Z,43.773,147.321,14,8.3
1995-07-30T05:11:23.630Z,-23.34,-70.294,45.6,8
1995-10-09T15:35:53.910Z,19.055,-104.205,33,8
1996-02-17T05:59:30.550Z,-0.891,136.952,33,8.09
1998-03-25T03:12:25.070Z,-62.877,149.527,10,8.1
2000-11-16T04:54:56.740Z,-3.98,152.169,33,8
2001-06-23T20:33:14.130Z,-16.265,-73.641,33,8.4
2003-09-25T19:50:06.360Z,41.815,143.91,27,8.16
2004-12-23T14:59:04.410Z,-49.312,161.345,10,8.1
2004-12-26T00:58:53.450Z,3.295,95.982,30,9.1
2005-03-28T16:09:36.530Z,2.085,97.108,30,8.6
2006-05-03T15:26:40.290Z,-20.187,-174.123,55,8
2006-11-15T11:14:13.570Z,46.592,153.266,10,8.3
2007-01-13T04:23:21.160Z,46.243,154.524,10,8.1
2007-04-01T20:39:58.710Z,-8.466,157.043,24,8.1
2007-08-15T23:40:57.890Z,-13.386,-76.603,39,8
2007-09-12T11:10:26.830Z,-4.438,101.367,34,8.4
2009-09-29T17:48:10.990Z,-15.489,-172.095,18,8.1
2010-02-27T06:34:11.530Z,-36.122,-72.898,22.9,8.8
2011-03-11T05:46:24.120Z,38.297,142.373,29,9.1
2012-04-11T08:38:36.720Z,2.327,93.063,20,8.6
2012-04-11T10:43:10.850Z,0.802,92.463,25.1,8.2
2013-02-06T01:12:25.830Z,-10.799,165.114,24,8
2013-05-24T05:44:48.980Z,54.892,153.221,598.1,8.3
2014-04-01T23:46:47.260Z,-19.6097,-70.7691,25,8.2
2015-09-16T22:54:32.860Z,-31.5729,-71.6744,22.44,8.3
2017-09-08T04:49:19.180Z,15.0222,-93.8993,47.39,8.2
2018-08-19T00:19:40.670Z,-18.1125,-178.153,600,8.2
2019-05-26T07:41:15.073Z,-5.8119,-75.2697,122.57,8
Roger
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Responses:
[21236] [21237] [21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] |
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21236 |
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Date: March 14, 2020 at 12:30:03
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian
Especially when there are 2 of them in this list!
Roger
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Responses:
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21237 |
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Date: March 14, 2020 at 12:44:53
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Look again. They're in there - 2004 & 2011.
Brian
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Responses:
[21238] [21239] [21240] [21241] [21242] [21243] [21246] [21247] [21244] |
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21238 |
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Date: March 14, 2020 at 13:41:43
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Skywise;
Yes they are there.
Dang fine print and old eyes!!
Roger
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Responses:
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21239 |
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Date: March 14, 2020 at 13:51:10
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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So, going back to the original question of magnitude
bins...
Do you need to update your catalog?
Brian
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Responses:
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21240 |
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Date: March 14, 2020 at 15:17:48
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Skywise;
Are you saying the whole thing needs replacing?
I'm really not up to that.
Roger
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Responses:
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21241 |
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Date: March 14, 2020 at 16:07:52
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Didn't you say you had a way to get the whole NEIC
catalog automatically?
Ideally it would only get the quake info.
Reformatting that would be easy.
Roger
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Responses:
[21242] [21243] [21246] [21247] [21244] |
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21242 |
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Date: March 14, 2020 at 16:13:34
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
I remember one year when someone was downloading the
catalog and selling copies.
The current Branch chief got really upset about it but
since the catalog is produced by tax funds, it's
public property.
Roger
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Responses:
[21243] [21246] [21247] [21244] |
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21243 |
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Date: March 14, 2020 at 17:56:33
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Yes. I wrote a program that grabs it through the web
interface. I would have to do some more work to it to
make more usable for you. Right now it doesn't have a
good user interface.
Brian
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Responses:
[21246] [21247] [21244] |
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21246 |
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Date: March 15, 2020 at 09:51:16
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Skywise
There's a danger here with big downloads.
NEIS could decide to take action against programs
which bypass the 20,000 quake limit, particularly if
it happens too often.
20,000 is about 3 months worth of 4.5+ quakes.
Roger
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Responses:
[21247] |
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21247 |
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Date: March 15, 2020 at 11:50:05
From: Skywise, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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I hit that limit, too.
I studied the interface instructions and it's possible
to ask for how many records will be returned before hand.
That way I never try to ask for too much.
Typically the program only grabs one month at a time. If
too many are returned it drops down to one week at a
time. The only except is 1601-1899, which has less than
400 records anyway.
Brian
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Responses:
None |
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21244 |
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Date: March 14, 2020 at 19:22:16
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Skywise;
I just finished a program to reduce the huge neic
search output files to nice neat numerical quake
files.
I've been doing it by hand until now, a horrendous
job.
The program to do it is about a half page long.
Should have done it years ago.
Roger
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Responses:
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21226 |
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Date: March 14, 2020 at 10:26:41
From: Roger Hunter, [DNS_Address]
Subject: Re: Roger, quake count oddness |
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Brian;
Reformatted by website but still readable
Part of the problem is that the world-wide web was
just getting started in 1973.
The count on small quakes is incomplete for that
reason.
Roger
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Responses:
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