From 182fcf56db630f6694e4a5bf8fca38f61ba855fa Mon Sep 17 00:00:00 2001
From: Peter Powers <pmpowers@usgs.gov>
Date: Wed, 14 Aug 2024 07:23:06 -0600
Subject: [PATCH] sigma id and weight adjustment

---
 .../usgs/earthquake/nshmp/gmm/UsgsPrviBackbone2025.java   | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/main/java/gov/usgs/earthquake/nshmp/gmm/UsgsPrviBackbone2025.java b/src/main/java/gov/usgs/earthquake/nshmp/gmm/UsgsPrviBackbone2025.java
index 9b0f87dd..c9a48520 100644
--- a/src/main/java/gov/usgs/earthquake/nshmp/gmm/UsgsPrviBackbone2025.java
+++ b/src/main/java/gov/usgs/earthquake/nshmp/gmm/UsgsPrviBackbone2025.java
@@ -62,8 +62,10 @@ public abstract class UsgsPrviBackbone2025 implements GroundMotionModel {
   // private final double SUBDUCTION_INTERFACE_MEAN_ADJUSTMENT = -1.098;
   // private final double SUBDUCTION_INTRASLAB_MEAN_ADJUSTMENT = -0.405;
 
-  private static final String[] SIGMA_IDS = { "σ-epri", "σ-usgs" };
-  private static final double[] SIGMA_WTS = { 0.8, 0.2 };
+  public static final String SIGMA_REF_ID = "σ-ref";
+  public static final String SIGMA_PRVI_ID = "σ-prvi";
+  private static final String[] SIGMA_IDS = { SIGMA_REF_ID, SIGMA_PRVI_ID };
+  private static final double[] SIGMA_WTS = { 0.5, 0.5 };
 
   private static final class Coefficients {
 
@@ -94,7 +96,7 @@ public abstract class UsgsPrviBackbone2025 implements GroundMotionModel {
       a = coeffsPhiSS.get("a_smoothed_Mod");
       b = coeffsPhiSS.get("b_smoothed_Mod");
 
-      Map<String, Double> coeffsPhiS2S = ccPhiSS.get(imt);
+      Map<String, Double> coeffsPhiS2S = ccPhiS2S.get(imt);
       φs2sPrvi = coeffsPhiS2S.get("phiS2S_PRVI");
       φs2sWus = coeffsPhiS2S.get("phiS2S_WUS");
 
-- 
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