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Merge pull request #49 from emthompson-usgs/update
New module for doing event-specific point source adjustments
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| "measurementType": {}, | ||
| "agency": "U.S. Department of Interior", | ||
| "releases": [ | ||
| { | ||
| "name": "ps2ff", | ||
| "description": "Approximated rupture distances from point source", | ||
| "version": "1.3", | ||
| "status": "Production", | ||
| "organization": "U.S. Geological Survey", | ||
| "vcs": "git", | ||
| "repositoryURL": "https://github.com/usgs/ps2ff", | ||
| "homepageURL": "https://github.com/usgs/ps2ff", | ||
| "downloadURL": "https://github.com/usgs/ps2ff/releases/tag/v1.3", | ||
| "disclaimerURL": "https://github.com/usgs/ps2ff/blob/master/DISCLAIMER.md", | ||
| "permissions": { | ||
| "licenses": [ | ||
| { | ||
| "name": "Public Domain", | ||
| "URL": "https://github.com/usgs/ps2ff/blob/master/LICENSE.md" | ||
| } | ||
| ], | ||
| "usageType": "openSource", | ||
| "exemptionText": null | ||
| }, | ||
| "laborHours": 1, | ||
| "languages": [ "Python" ], | ||
| "tags": [ | ||
| "earthquake", | ||
| "shakemap", | ||
| "point source", | ||
| "finite fault" | ||
| "seismic-hazard", | ||
| "earthquake-hazard" | ||
| ], | ||
| "contact": { | ||
| "name": "Eric Thompson", | ||
| "email": "[email protected]" | ||
| }, | ||
| "date": { | ||
| "metadataLastUpdated": "2018-12-12" | ||
| } | ||
| }, | ||
| { | ||
| "name": "ps2ff", | ||
| "description": "Approximated rupture distances from point source", | ||
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| import numpy as np | ||
| import time as time | ||
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| from ps2ff.integration_loops import single_event_inner_loop | ||
| from ps2ff.constants import MagScaling, Mechanism | ||
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| # Use max_workers threading in model? | ||
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| def single_event_adjustment( | ||
| magnitude, | ||
| hyp_depth, | ||
| ar=1.7, | ||
| mechanism=Mechanism.A, | ||
| mag_scaling=MagScaling.WC94, | ||
| n_repi=13, | ||
| min_repi=0.1, | ||
| max_repi=1000, | ||
| nxny=3, | ||
| n_theta=9, | ||
| n_dip=3, | ||
| min_dip=0, | ||
| max_dip=np.pi/2.0, | ||
| n_eps=3, | ||
| trunc=2): | ||
| """ | ||
| Method for getting event-specific point source distance | ||
| adjustment factors. This does not integrate across magnitude | ||
| or depth and so those values must be provided. | ||
| Args: | ||
| magnitude (float): | ||
| Earthquake magnitude. | ||
| hyp_depth (float): | ||
| Hypocentral depth (km). | ||
| ar (float): | ||
| Aspect ratio (L/W). | ||
| mechanism (Mechanism): | ||
| A ps2ff.constants Mechanism instance. | ||
| mag_scaling (MagScaling): | ||
| A ps2ff.constants MagScaling instance. | ||
| n_repi (int): | ||
| Number of log-spaced Repi points to compute conversions. | ||
| min_repi (float): | ||
| Minimum Repi to compute conversions (km). | ||
| max_repi (float): | ||
| Maximum Repi to compute conversions (km). | ||
| nxny (int): | ||
| Number of integration steps in the x/y direction for floating, | ||
| the rupture plane around the hypocenter. | ||
| n_theta (int): | ||
| Number of integration steps for theta. Default value of 9 is | ||
| an angular step size of 45 deg since it goes from 0 to 360 deg. | ||
| n_dip (int) | ||
| Number of integration steps for dip. Default value of 3 gives | ||
| a step size of 45 deg for the default range of 0 to 90 deg. | ||
| min_dip (float): | ||
| Minimum dip for integration (rad). | ||
| max_dip (float): | ||
| Maximum dip for integration (rad). | ||
| n_eps (int): | ||
| Number of integration steps for mag-area relationship. | ||
| trunc (float): | ||
| Truncation level for normal distribution of log area conditioned | ||
| on magnitude. | ||
| Retunrs: | ||
| tuple: All arrays of length n_repi: | ||
| - Repi (km). | ||
| - Average Rjb conditioned on Repi, M, and Zhyp. | ||
| - Average Rrup conditioned on Repi, M, and Zhyp. | ||
| - Variance of Rjb conditioned on Repi, M, and Zhyp. | ||
| - Variance of Rrup conditioned on Repi, M, and Zhyp. | ||
| """ | ||
| start_time = time.time() | ||
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| # Check that mag_scaling and mechanism are the | ||
| # correct type | ||
| if not isinstance(mag_scaling, MagScaling): | ||
| raise TypeError( | ||
| 'mag_scaling must bee a MagScaling instance') | ||
| if not isinstance(mechanism, Mechanism): | ||
| raise TypeError( | ||
| 'mechanism must bee a Mechanism instance') | ||
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| # Create conf dictionary. | ||
| conf = {} | ||
| conf['M'] = magnitude | ||
| conf['zhyp'] = hyp_depth | ||
| conf['AR'] = ar | ||
| conf['mech'] = mechanism | ||
| conf['rup_dim_model'] = mag_scaling | ||
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| conf['nxny'] = nxny | ||
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| conf['ndip'] = n_dip | ||
| conf['mindip'] = min_dip | ||
| conf['maxdip'] = max_dip | ||
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| conf['neps'] = n_eps | ||
| conf['trunc'] = trunc | ||
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| conf['min_seis_depth'] = 0.0 | ||
| conf['max_seis_depth'] = 35.0 # not used? | ||
| conf['bytheta'] = False | ||
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| repi_min = 0.1 | ||
| repi_max = 1000 | ||
| repi = np.logspace( | ||
| np.log10(repi_min), np.log10(repi_max), n_repi) | ||
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| Rrup_var = np.zeros_like(repi) | ||
| Rrup_avg = np.zeros_like(repi) | ||
| Rjb_var = np.zeros_like(repi) | ||
| Rjb_avg = np.zeros_like(repi) | ||
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| for i in range(n_repi): | ||
| Rrup_var[i], Rrup_avg[i], Rjb_var[i], Rjb_avg[i] = \ | ||
| single_event_inner_loop(conf, repi[i], ntheta=n_theta) | ||
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| print("Total execution time %f seconds." % (time.time() - start_time)) | ||
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| return repi, Rjb_avg, Rrup_avg, Rjb_var, Rrup_var |
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