Changes for page Seismometers

Summary

• Page properties (2 modified, 0 added, 0 removed)

Details

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Author

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1		-XWiki.santi
	1	+XWiki.robert

Content

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10	10
11	11	Currently, 4 kinds of nanometric broadband seismic sensors are available. The Trillium Compact 120s, Trillium Compact 20s, Trillium Compact Posthole, and most recently, the Trillium Compact Horizon. These seismometers are ideal for long-term deployments of multiple months. All of these seismometers are compatible with the LPR-200 and TSAWR loggers and are designed for low energy consumption.
12	12
13		-=== Trillium Compact 120 ===
	13	+=== Trillium Compact 120s ===
14	14
15	15	The Trillium Compact 120s has sensitivity band between 120 seconds and 100 Hz but is prone to corrosion when buried for long periods. They have a tilt tolerance of ~~10° but come with adjustable feet for leveling.
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17	17	For more information, refer to the [[Nanometrics Trillium Compact information sheet>>https://nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact.pdf?hsLang=en-ca]]
18	18
19		-=== Trillium Compact 20 ===
	19	+=== Trillium Compact 20s ===
20	20
21		-The Trillium Compact 20 looks identical to the Trillium Compact 120 and has a recording range between 20 seconds and 100 Hz. but is prone to corrosion when buried for long periods. They have a tilt tolerance of ~~10° but come with adjustable feet for leveling.
	21	+The Trillium Compact 20s looks identical to the Trillium Compact 120s and has a recording range between 20 seconds and 100 Hz. but is prone to corrosion when buried for long periods. They have a tilt tolerance of ~~10° but come with adjustable feet for leveling.
22	22
23	23	For more information, refer to the [[Nanometrics Trillium Compact information sheet>>https://nanometrics.ca/hubfs/Downloads/Data%20Sheets/trillium_compact.pdf?hsLang=en-ca]]
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45	45	The LE-3D Lite are small, robust, short period sensors with a a corner period of 1 second.
46	46
47		-=== SmartSolo Short periods ===
	47	+=== SmartSolo BD3C-5 ===
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49		-Two types of SmartSolo brand seismometers are currently available, one of which is a short-period seismometer with corner frequency of 5 Hz. More information is available on the [[SmartSolo Seismometers page>>doc:Instrumentation.SmartSolo Nodes.WebHome]].
	49	+Sometimes erroneously referred to as a "broadband node", the larger cylinder-shaped BD3C-5 is technically a //short period //instrument as it has a corner period of 5 seconds (< 10). It is still a high gain seismometer however (e.g. channels ?H[NEZ]). More information is available on the [[SmartSolo Seismometers page>>doc:Instrumentation.SmartSolo Nodes.WebHome]].
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	51	+== Geophone Sensors ==
51	51
	53	+"Geophones" are technically "very short period", with corner frequencies >= 5 Hz. ANSIR currently have two geophone-type sensors available for loan: the 3-Channel SmartSolo IGU-16HR and 1-Channel SmartSolo IGU-16, both with 5 Hz (0.2 second) corners.
	54	+
	55	+The center character in the channel codes should be "P", e.g. DPN, DPE, DHZ for 250 Hz.
	56	+
	57	+(% class="box warningmessage" %)
	58	+(((
	59	+Note that SmartSolo branded geophone channels have inverted polarity relative to traditional standards!!! This applies only to the IGU-16HR instruments and NOT the BD3C-5 instruments.
	60	+)))
	61	+
52	52	= Channel and Instrument conventions =
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54	54	We follow FDSN guidelines for sensor channel and type naming conventions, outlined at [[SAGE / IRIS>>https://ds.iris.edu/ds/nodes/dmc/data/formats/seed-channel-naming/]] and also copied below:
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70	70	|P|On the order of 0.1 to 1 day ^^1^^|≥ 0.00001 to < 0.0001|
71	71	|T|On the order of 1 to 10 days ^^1^^|≥ 0.000001 to < 0.00001|
72	72	|Q|Greater than 10 days ^^1^^|< 0.000001|
73		-|A|Administrative Instrument Channel|variable|NA
74		-|O|Opaque Instrument Channel|variable|NA
75	75	)))
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77	77	(% class="col-xs-12 col-sm-4" %)