This service provides access to the timeseries data of the RESIF seismic network. Optional signal processing may be applied and data may be returned in several formats. The time span may be up to 31 days. Only unrestricted data are available.
/query? (channel-options) (date-range-options) (output-options) [filter-options] {plot-options} [nodata=404]
where:
channel-options :: (net=<network> sta=<station> loc=<location> cha=<channel>)
date-range-options :: (starttime=<date|duration>) (endtime=<date|duration>)
output-options :: (format=<ascii|mseed|sac|slist|tspair|plot>)
plot-options :: {showtitle=<TRUE|false>} {showscale=<TRUE|false>} {monochrome=<true|FALSE>}
plot-options :: {width=<400-2000>} {height=<200-2000>}
filter-options :: [decimate=<2-16>]
filter-options :: [taper=<0.0-0.5,HANNING|hamming|cosine>]
filter-options :: [envelope=<true|FALSE>]
filter-options :: [lpfilter=<frequency>] [hpfilter=<frequency>] [bpfilter=<fmin-fmax>] {zerophase=<true|FALSE>}
filter-options :: [detrend=<true|FALSE>]
filter-options :: [diff=<true|FALSE>] [int=<true|FALSE>]
filter-options :: [scale=<number>] [divscale=<number>]
filter-options :: [correct=<true|FALSE>] {waterlevel=<number>} {freqlimits=<f1-f2-f3-f4>} {units=<AUTO|disp|vel|acc>}
filter-options :: [demean=<TRUE|false>]
(..) required
[..] optional
{..} optional, but complements another option
default values are uppercase| Parameter | Example | Discussion |
|---|---|---|
| net[work] | FR | Seismic network name. Accepts wildcards and lists. |
| sta[tion] | CIEL | Station name. Accepts wildcards and lists. |
| loc[ation] | 00 | Location code. Use loc=-- for empty location codes. Accepts wildcards and lists. |
| cha[nnel] | HHZ | Channel Code. Accepts wildcards and lists. |
Wildcards: the question mark ? represents any single character, while the asterisk * represents zero or more characters.
List: multiple items may be retrieved using a comma-separated list. Wildcards may be included in the list.
For example, with channel codes: channel=EH?,BHZ
| Parameter | Example | Discussion |
|---|---|---|
| start[time] | 2010-01-10T00:00:00 | Selects data on or after the specified start time. |
| end[time] | 2011-02-11T01:00:00 | Selects data on or before the specified end time. |
The definition of the time interval may take different forms:
The following parameters allow filtering the time series. Parameter order matters because each operation is performed in the order given.
| Parameters | Examples | Discussion | Default value |
|---|---|---|---|
| taper | 0.25 0.25, HANNING 0.35, COSINE |
Tapering in the time domain. The window width is specified as a fraction of the trace length from 0 to 0.5. The width may be optionally followed by window type : HANNING (défaut), HAMMING, COSINE. | none |
| envelope | true | Time series envelope calculed with the approximated Hilbert transform. | false |
| lp[filter] | 1.0 | Low-pass filter with the specified cutoff 1,2. | none |
| hp[filter] | 2.0 | High-pass filter with the specified cutoff 1,2. | none |
| bp[filter] | 0.5-1.2 | Band-pass filter with the specified range 1,2,3. | none |
| zerophase | true | Zerophase filtering (may be used with lpfilter, hpfilter or bpfilter option). | false |
| scale | 1.5 | Scale data samples by the specified factor. | none |
| divscale | 4.0 | Scale data samples by the inverse of the specified factor. | none |
| diff | true | Differentiate using centered method. | false |
| int | true | Integrate using trapezoidal method. | false |
| deci[mate] | 2.0 | Decimation factor. A low-pass filter is applied prior to decimation (anti-aliasing filter). | none |
| detrend | true | Remove the trend of the time series. | false |
| demean | true | Remove the mean of the time series. | false |
| correct | true | Apply instrumental correction by deconvolution with earth unit’s conversion. | false |
| waterlevel | 10 none |
Waterlevel (en dB) used for the deconvolution. “none” value corresponds to the classical inverse filtering. |
10 |
| freqlimits | 0.01-0.04-0.5-0.6 | Band pass filter applied to the frequency domain prior to the deconvolution1,2. Rectangular window between f2 and f3 and cosine window between f1 and f2 and between f3 and f4. | none |
| units | VEL | Output unit (AUTO, DISP, VEL, ACC). Enabled only with the correct option. | AUTO |
Notes :
Frequency in Hertz.
IIR 4th order filter with a Butterworth window.
Frequency numbers may be separated by a comma or by a dash. For example : 0.01,0.02 or 0.01-0.02
| Parameters | Examples | Discussion | Default value |
|---|---|---|---|
| showtitle | false | Whether or not to show the channel and date-range information on the top of the plot. | true |
| showscale | false | Whether or not to show a scale on the right-side axis of the plot. | true |
| monochrome | true | Creates a grayscale or a color plot. | false |
| width | 500 | Width of the output plot (pixels). The range is 400 to 2000. | 1200 |
| height | 400 | Height of the output plot(pixels). The range is 200 to 2000. | 400 |
| Parameters | Example | Discussion | Default value |
|---|---|---|---|
| format | ascii | Format of the output file : ascii (equivalent to tspair), mseed, sac, slist or plot (graphical output). | none |
YYYY-MM-DDThh:mm:ss[.ssssss] ex. 1997-01-31T12:04:32.123
YYYY-MM-DD ex. 1997-01-31 (a time of 00:00:00 is assumed)
where:
YYYY :: four-digit year
MM :: two-digit month (01=January, etc.)
DD :: two-digit day (01 through 31)
T :: date-time separator
hh :: two-digit hour (00 through 23)
mm :: two-digit number of minutes (00 through 59)
ss :: two-digit number of seconds (00 through 59)
ssssss :: one to six-digit number of microseconds (0 through 999999)