Document of the version 4 (20161224) flatfile
Columns for IDs
| Column_name | Description_en | 說明 | 單位(unit) | Note |
|---|---|---|---|---|
| EQSN | SSHAC GMC GMC database event id | SSHAC GMC database地震ID | SSHAC GMC資料庫 | |
| EQ_ID | eq id using timestamp | 地震ID使用時間 | ||
| Pfile | eq id (pfile name from CWB) | 地震ID(氣象局pfile名) | CWB | |
| file.id | data id (file from CWB) | 資料ID(氣象局檔名) | CWB |
Columns for Earthquake related information
| Column_name | Description_en | 說明 | 單位(unit) | Note |
|---|---|---|---|---|
| Hyp.Lat | epicenter latitude | 1. Prof. Wu’s relocation 2. CWB 3. Cat=A using ccld |
degree | SSHAC SSC 地震目錄資料, CWB, Brain Chiou |
| Hyp.Long | epicenter longitude | 1. Prof. Wu’s relocation 2. CWB 3. Cat=A using ccld |
degree | SSHAC SSC 地震目錄資料, CWB, Brain Chiou |
| Hyp.Depth | hypocenter depth | 1. Prof. Wu’s relocation 2. CWB 3. Cat=A using ccld |
km | SSHAC SSC 地震目錄資料, CWB, Brain Chiou |
| ML | Local magnitude | 1. Prof. Wu’s relocation 2. CWB |
||
| MW | Moment magnitude | 1. GCMT 2. BATS(convert to GCMT) 3. Converted from ML |
||
| Length | fault length | 斷層長度 | km | Brain模擬計算段層面距離資料 |
| Width | fault width | 斷層寬度 | km | Brain模擬計算段層面距離資料 |
| Ztor | Depth to top of fault rupture | 距斷層破裂面頂端深度 | km | Brain模擬計算段層面距離資料 |
| Cat | category variable indicating the method used in distance calculation of a particular event. A: All fault attributes are extracted from a preferred finite fault model (see discussions below); randomization of fault attributes is not necessary . B: The strike/dip/rake of preferred fault plane is selected from the available fault plane solutions; random sampling of fault area, fault length, and hypo position on fault are made according to the distributions described in CY2008. C: Fault plane solution is available, but preferred plane is unresolved; in addition to the random sampling of category B, random selection over the two possible planes (0.5/0.5 weight) is made. D: Fault plane solution is unavailable; fault plane geometry and faulting mechanism are inferred from historical average; in addition to the randomization of category B, random sampling of strike (from a uniform distribution between +- 30 degrees of inferred value) and dip (from a uniform distribution between +- 10 degrees of inferred dip) E: Neither fault plane solution nor historical average are available; random samples of mechanism (which is then used to set the dip angle), strike, fault length, fault area, and hypocenter position on fault are made. |
Brain模擬計算段層面距離資料 | ||
| Strike | suggest strike | 走向 | degree | |
| Dip | suggest dip | 傾角 | degree | |
| Rake | suggest rake | 滑移角 | degree | |
| Mainshock_ID | mainshock id | 主震ID，標示主餘震序列ID (主震為0，若是前震或餘震 則標示為該地震序列的主震ID)， ID編號為SSC地震目錄之地震ID (ID.eqcatalog) |
SSHAC SSC 地震目錄資料 | |
| Fault.type | mechanism base on rake angle SS=Strike‐Slip, N=Normal, R=Reverse, RO=Reverse‐Oblique, NO=Normal‐Oblique |
斷層機制 | ||
| eq.typ | earthquake type classification base on zoning using new subduction zone model. (GMC_EQ_Classification_20160914.html) | 地震類型 | ||
| Rmax1 | applies to all instruments whose trigger level (TL1) is 4 gal | |||
| Rmax2 | applies to the NanoTech instrument whose trigger level (TL2) is 2gal |
Columns for Station related information
| Column_name | Description_en | 說明 | 單位(unit) | Note |
|---|---|---|---|---|
| STA_ID | station id | 測站ID | ||
| STA_Lon_X | station longitude | 測站經度 | NCREE Dr.Kuo | |
| STA_Lat_Y | station latitude | 測站緯度 | NCREE Dr.Kuo | |
| STA_Elevation | station elevation | 測站高程 | m | NCREE Dr.Kuo |
| Vs30 | suggest Vs30 | Vs30 | m/s | NCREE Dr.Kuo |
| Vs30_ref | reference of Vs30: K12: Kuo et al. (2012) and EGDT (measured Vs30), K16: Kuo et al. (2016) (measured Vs30), LT08: Lee and Tsai (2008) (estimated Vs30), AW09: Allen and Wald (2009) (estimated Vs30), na: not available |
Vs30出處 | NCREE Dr.Kuo | |
| Vs30_class | 1 for measured Vs30, 0 for infered | 量測或者推估Vs30，1=量測, 0=推估 | ||
| Z1.0 | Z1.0 | Z1.0 | m | NCREE Dr.Kuo |
| Z1.0_ref | reference of Z1.0: a: microtremor array method (Kuo et al., 2016), e: EGDT (Kuo et al., 2012), r: Receiver Function, h: HVSR, inf: Inferred from relationship of Vs30 and Z1.0 in Taiwan, na: not available |
Z1.0出處 | NCREE Dr.Kuo | |
| Kappa | Kappa | kappa | NCREE Dr.Kuo | |
| kappa_ref | reference of kappa (Chang et al. (2016)) | kappa出處 | NCREE Dr.Kuo | |
| inBasin | If the station is inside basin(yes, 1, no, 0) | |||
| DistBasin_km | The distanc to the clostest basin. | km | ||
| InBasinName | The name of basin. | |||
| DistBasinName | The name of clostest basin. |
Columns for Distance metrics
| Column_name | Description_en | 說明 | 單位(unit) | Note |
|---|---|---|---|---|
| Rx | Horizontal distance from top edge of rupture. perpendicular to the fault strike. | 測站垂直斷層走向方向的水平距離 | km | Brain模擬計算段層面距離資料 |
| Ry | ||||
| U | strike parallel coordinate (origin is the upper left corner of the fault plane), Ry + L / 2, L is fault length | |||
| Repi | epicentral distance | 震央距離 | km | |
| Rhyp | hypocentral distance | 震源距離 | km | |
| Rrup | Closest distance to fault rupture | 距斷層面最短距離 | km | |
| Rjb | Joyner and Boore distance | 距斷層地表投影面最短距離 | km | |
| Rrms | Root-mean-squared distance | km | ||
| ChPrime | the approximate normalizedisochrone velocity as defined in Spudich and Chiou | |||
| E | length of the E-path (in km)going from the hypocenter to the direct point on fault | |||
| AveR | averaged S-wave radiation pattern coefficient along the E-path | |||
| DPP | direct point directivity parameter | |||
| FW.HW.Indicator | hanging-wall footwall indicator(hw=hanging wall region, fw= footwall region, nu=neutral region, na: not applicable as fault dip is greater than 70, NA= no data.) | NGA database | ||
| hwflag | hanging-wall flag, 1=hanging-wall, 0=not | 斷層上下盤指標 |
Columns for Record process
| Column_name | Description_en | 說明 | 單位(unit) | Note |
|---|---|---|---|---|
| HP_H1 | High-pass corner frequency for component H1 | 高通濾波頻率-H1分量 | Hz | |
| HP_H2 | High-pass corner frequency for component H2 | 高通濾波頻率-H2分量 | Hz | |
| HP_Z | High-pass corner frequency for component Z | 高通濾波頻率- Z分量 | Hz | |
| LP_H1 | Low-pass corner frequency for component H1 | 低通濾波頻率-H1分量 | Hz | |
| LP_H2 | Low-pass corner frequency for component H2 | 低通濾波頻率-H2分量 | Hz | |
| LP_Z | Low-pass corner frequency for component Z | 低通濾波頻率- Z分量 | Hz | |
| Lowest_Usable_Freq_H1 | lowest usable frequency H1 | 最小可用頻率-水平分量1 | Hz | NGA資料庫 |
| Lowest_Usable_Freq_H2 | lowest usable frequency H2 | 最小可用頻率-水平分量2 | Hz | NGA資料庫 |
| Lowest_Usable_Freq_Ave | lowest usable frequencty avg (largest of H1,H2)) | 最小可用頻率-兩水平量最大值 | Hz | NGA資料庫 |
| usable_period_H | longest usable period | 最長可用週期 | sec | |
| PGA.raw.Z | record raw PGA (unprocessed) | 紀錄原始PGA | gal | |
| PGA.raw.NS | record raw PGA (unprocessed) | 紀錄原始PGA | gal | |
| PGA.raw.EW | record raw PGA (unprocessed) | 紀錄原始PGA | gal | |
| Instrument | Instrument type | 儀器型號 |
Columns for Ground motion values
| Column_name | Description_en | 說明 | 單位(unit) | Note |
|---|---|---|---|---|
| PGA | PGA | PGA | g | |
| PGV | PGV | PGV | cm/s | |
| PGD | PGD | PGD | cm | |
| T0.010S | PSA | Sa | g | |
| … | PSA | Sa | g | |
| T20.000S | PSA | Sa | g | |
| Sa_source | Source of Sa value | Sa值資料來源 |